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1975 Chronology

1975 January 1 - .
  • Vulkan Mars Expedition - . Nation: Russia. Related Persons: Glushko.

    Glushko proposed a Mars expedition launched by the Vulkan heavy-lift launch vehicle. The concept was treated like a bad allergy by the VPK. He later scaled it down and proposed it for launch by Energia (using 100 tonne modules instead of 230 tonne modules).


1975 January 1 - .
  • Vulkan Lunar Base - . Nation: Russia. Related Persons: Barmin, Bushuyev, Glushko, Mishin. Program: Lunar L3. Spacecraft: LEK, Lunokhod LEK, LZhM, LZM.

    Mishin and Barmin, using budget provided by the Ministry of Defence, had designed a lunar base for launch by the N1 in 1969-1974. After the cancellation of the N1, Glushko pleaded with the Military-Industrial Commission for the work to be taken from Barmin and be given to NPO Energia. Glushko's alternative, Vulkan-launched base was elaborated within his bureau. Bushuyev developed spacecraft for the base. Prudnikova developed a modular lunar city, with living modules, factory modules, a nuclear reactor power module, and a lunar crawler with a 200 km radius of action. The project work was only finally cancelled after the Apollo-Soyuz flights.


1975 January 1 - . Launch Site: Vandenberg. Launch Complex: Vandenberg.
  • The USNS Sunnyvale decommissioned. - . Nation: USA. The USNS Sunnyvale, the last Air Force Western Test Range instrumentation ship, transferred to the Maritime Administration..

1975 January 1 - . Launch Vehicle: UR-700.
  • Chelomei presents plan for Mars mission - . Nation: Russia. Related Persons: Chelomei. Class: Mars. Type: Manned Mars flyby. Spacecraft: MK-700.

    As the only remaining contender for the Aelita design competition, Chelomei proposes a Mars flyby using an MK-700 spacecraft. A crew of two would be sent on a two year mission in a single launch of a UR-700M booster. The spacecraft would have a mass of 250 tonnes in low earth orbit and be equipped with an RD-410 nuclear engine.


1975 Jan - . LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • Replacement of Minuteman II missiles with Minuteman III missiles began at Wing I, Malmstrom Air Force Base, Montana. - .

1975? - . Launch Site: Wallops Island. Launch Vehicle: Athena RTV.
  • Re-entry vehicle test - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1975 January 1 - . Launch Site: Kagoshima. Launch Vehicle: S-310.
  • Test mission - . Nation: Japan. Agency: ISAS. Apogee: 200 km (120 mi).

1975 - . Launch Site: Baikonur. Launch Vehicle: UR-100.
  • Operational missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-04 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-01 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Drovyanaya. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Drovyanaya. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Drovyanaya. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975? - . Launch Site: Drovyanaya. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 - . Launch Site: Kapustin Yar. Launch Vehicle: Tochka.
  • Nation: Russia. Agency: RVSN. Apogee: 20 km (12 mi).

1975 - . Launch Site: Drovyanaya. Launch Vehicle: UR-100.
  • Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975? - . Launch Site: Dombarovskiy. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 - . Launch Site: Plesetsk. Launch Vehicle: Temp-2S.
  • Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-05 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-06 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975? - . Launch Site: Drovyanaya. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 - . Launch Site: Plesetsk. Launch Vehicle: Temp-2S.
  • Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-02 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975? - . Launch Site: Kapustin Yar. LV Family: R-12. Launch Vehicle: K63.
1975 - . Launch Site: Kapustin Yar. LV Family: R-12. Launch Vehicle: K63.
1975? - . Launch Site: Dombarovskiy. LV Family: UR-100. Launch Vehicle: UR-100K.
  • Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-03 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 January 2 - . 17:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 86 km (53 mi).

1975 January 3 - . 17:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 55 km (34 mi).

1975 January 4 - . 13:20 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 88 km (54 mi).

1975 January 6 - .
  • Shuttle static test article assembly starts. - . Nation: USA. Program: STS. Start long-lead fabrication aft fuselage (STA-099).

1975 January 6 - . 23:56 GMT - . Launch Site: Cape Parry. LV Family: Black Brant. Launch Vehicle: Black Brant IVB.
  • Periquito Plasma / barium release mission - . Nation: USA. Agency: Sandia. Apogee: 540 km (330 mi).

1975 January 7 - . 22:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 84 km (52 mi).

1975 January 8 - . 16:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 87 km (54 mi).

1975 January 9 - . Launch Site: Kwajalein. Launch Complex: Kwajalein RN. LV Family: Sergeant. Launch Vehicle: Castor.
  • Re-entry Vehicle test - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1975 January 9 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-66 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 January 10 - . 02:27 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg 395-C. LV Family: Titan. Launch Vehicle: Titan II.
  • SOFT - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 January 10 - . 21:43 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511.
  • Soyuz 17 - . Call Sign: Zenit (Zenith ). Crew: Grechko, Gubarev. Backup Crew: Lazarev, Makarov. Support Crew: Klimuk, Sevastyanov. Payload: Soyuz 7K-T s/n 38. Mass: 6,800 kg (14,900 lb). Nation: Russia. Related Persons: Grechko, Gubarev, Klimuk, Lazarev, Makarov, Sevastyanov. Agency: MOM. Program: Salyut. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 17. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 29.56 days. Decay Date: 1975-02-09 . USAF Sat Cat: 7604 . COSPAR: 1975-001A. Apogee: 249 km (154 mi). Perigee: 185 km (114 mi). Inclination: 51.6000 deg. Period: 88.80 min. Manned two crew. Docked with Salyut 4. Joint experiments with the Salyut scientific orbital station..

1975 January 11 - . 00:32 GMT - . Launch Site: Cape Parry. LV Family: Black Brant. Launch Vehicle: Black Brant IVB.
  • Periquito Plasma / barium release mission - . Nation: Canada. Agency: Sandia. Apogee: 540 km (330 mi).

1975 January 11 - . 10:53 GMT - . Launch Site: Sonde Stromfjord. LV Family: Black Brant. Launch Vehicle: Black Brant IVB.
  • DLR G-BB4-66 Ionosphere mission - . Nation: USA. Agency: DFVLR. Apogee: 280 km (170 mi).

1975 January 12 - . 20:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHIR. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 83 km (51 mi).

1975 January 13 - . 20:50 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHIR. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 87 km (54 mi).

1975 January 14 - .
  • X-24 Flight 47 - . Crew: Manke. Payload: X-24B flight 19. Nation: USA. Related Persons: Manke. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1862 kph. Maximum Altitude - 22180 m. Flight Time - 477 sec..

1975 January 14 - . 20:56 GMT - . Launch Site: Wallops Island. LV Family: Tomahawk. Launch Vehicle: Ute Tomahawk.
  • Aladdin 75 Reliability Test Aeronomy / test - . Nation: USA. Agency: USAF CRL. Apogee: 235 km (146 mi).

1975 January 15 - . 22:46 GMT - . Launch Site: Wallops Island. LV Family: Tomahawk. Launch Vehicle: Ute Tomahawk.
  • Aladdin 75 Reliability Test Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 159 km (98 mi).

1975 January 16 - . 20:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHIR. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 87 km (54 mi).

1975 January 17 - . 09:07 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 702 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-01-29 . USAF Sat Cat: 7606 . COSPAR: 1975-002A. Apogee: 313 km (194 mi). Perigee: 205 km (127 mi). Inclination: 71.3000 deg. Period: 89.70 min. Area survey photo reconnaissance satellite; returned film capsule..

1975 January 17 - . 09:35 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 9M.
  • Airglow Aeronomy / ionosphere mission - . Nation: Japan. Agency: ISAS. Apogee: 363 km (225 mi).

1975 January 17 - . 22:43 GMT - . Launch Site: Wallops Island. LV Family: Tomahawk. Launch Vehicle: Ute Tomahawk.
  • Aladdin 75 Sphere Aeronomy / plasma mission - . Nation: USA. Agency: USAF CRL. Apogee: 190 km (110 mi).

1975 January 18 - . 04:35 GMT - . Launch Site: Wallops Island. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • Aladdin 75 Mass Spectrometer Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 159 km (98 mi).

1975 January 18 - . 04:45 GMT - . Launch Site: Wallops Island. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • Aladdin 75 NO / Photometry Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 183 km (113 mi).

1975 January 19 - . Launch Site: Baikonur. Launch Complex: Baikonur LC162/36. LV Family: R-36. Launch Vehicle: R-36 8K67.
  • Svilets test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 January 19 - . 11:12 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF03. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • Trident SFT-4 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). The first Minuteman launch in the HAVE FLY Program occurred. This was part of the Navy's Trident Supplemental Flight Test program. .

1975 January 20 - . Launch Site: White Sands. Launch Complex: White Sands LC36. LV Family: Black Brant. Launch Vehicle: Black Brant VC.
  • LPSP-EUV4 Solar mission - . Nation: USA. Agency: NASA. Apogee: 279 km (173 mi).

1975 January 20 - . Launch Site: Wallops Island. Launch Vehicle: Athena RTV.
  • HEARTS II RV 106 - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1975 January 21 - . Launch Site: Warren AFB. LV Family: Minuteman.
  • The last Wing V squadron was turned over to the Strategic Air Command to complete the Wing V integrated program at Francis E. Warren AFB, Wyoming, 20 days ahead of schedule. - . This program, the greatest single effort in the Minuteman program since the early days when the Minuteman I was placed in operation, included the swap-out of Minuteman I missiles for Minuteman Ills..

1975 January 21 - . Launch Site: Baikonur. Launch Complex: Baikonur LC162/36. LV Family: R-36. Launch Vehicle: R-36 8K67. FAILURE: Failure.
  • Svilets test - . Nation: Russia. Agency: RVSN. Apogee: 0 km (0 mi).

1975 January 21 - . 11:04 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC133/1. LV Family: R-12. Launch Vehicle: Kosmos 11K63.
  • Cosmos 703 - . Payload: DS-P1-Yu s/n 70. Mass: 400 kg (880 lb). Nation: Russia. Agency: MO. Program: DS. Class: Military. Type: Military target satellite. Spacecraft Bus: DS. Spacecraft: DS-P1-Yu. Completed Operations Date: 1975-08-11 . Decay Date: 1975-11-20 . USAF Sat Cat: 7611 . COSPAR: 1975-003A. Apogee: 1,518 km (943 mi). Perigee: 197 km (122 mi). Inclination: 82.0000 deg. Period: 102.10 min. Development of systems for air defence and the control of outer space..

1975 January 22 - . 17:55 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Thor. Launch Vehicle: Delta 2910.
  • Landsat 2 - . Payload: Landsat B. Mass: 953 kg (2,101 lb). Nation: USA. Agency: NASA Greenbelt. Program: Landsat. Class: Earth. Type: Earth resources satellite. Spacecraft Bus: Nimbus. Spacecraft: Landsat 1-2-3. USAF Sat Cat: 7615 . COSPAR: 1975-004A. Apogee: 913 km (567 mi). Perigee: 900 km (550 mi). Inclination: 99.3000 deg. Period: 103.10 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..

1975 January 23 - . LV Family: Shuttle.
  • HQ USAF issued a Program Management Directive specifying that initial DOD space shuttle mission operations would be planned and controlled by a predominantly NASA team rather than by a DOD team. - . The Program Management Directive also directed that action be taken to minimize the impact of DOD communications security requirements on shuttle operations..

1975 January 23 - . 11:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 704 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 14.00 days. Decay Date: 1975-02-06 . USAF Sat Cat: 7617 . COSPAR: 1975-005A. Apogee: 305 km (189 mi). Perigee: 205 km (127 mi). Inclination: 72.9000 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 January 23 - . 11:05 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 9M.
  • X-ray astronomy mission - . Nation: Japan. Agency: ISAS. Apogee: 353 km (219 mi).

1975 January 24 - . 14:22 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 76 km (47 mi).

1975 January 25 - . 12:40 GMT - . Launch Site: El Arenosillo. Launch Vehicle: Petrel.
  • Ionosphere mission - . Nation: UK. Agency: INTA. Apogee: 100 km (60 mi).

1975 January 26 - . 02:37 GMT - . Launch Site: Kerguelen. LV Family: Stromboli. Launch Vehicle: Eridan.
  • ARAKS Northward Ionosphere / plasma mission - . Nation: France. Agency: CNES. Apogee: 190 km (110 mi).

1975 January 27 - . Launch Site: Baikonur. Launch Complex: Baikonur LC142/34. LV Family: R-36. Launch Vehicle: R-36 8K67.
  • Svilets test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 January 28 - . Launch Site: Kwajalein. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Magnetospheric mission - . Nation: USA. Agency: Sandia. Apogee: 185 km (114 mi).

1975 January 28 - . 12:05 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC133/1. LV Family: R-12. Launch Vehicle: Kosmos 11K63.
  • Cosmos 705 - . Payload: DS-P1-Yu s/n 75. Mass: 400 kg (880 lb). Nation: Russia. Agency: MO. Program: DS. Class: Military. Type: Military target satellite. Spacecraft Bus: DS. Spacecraft: DS-P1-Yu. Completed Operations Date: 1975-11-20 . Decay Date: 1975-11-18 . USAF Sat Cat: 7623 . COSPAR: 1975-006A. Apogee: 502 km (311 mi). Perigee: 271 km (168 mi). Inclination: 71.0000 deg. Period: 92.30 min. Development of systems for air defence and the control of outer space..

1975 January 29 - . 15:20 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF04. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • FOT GT48GM Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 January 30 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-67 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 January 30 - . 02:15 GMT - . Launch Site: Fort Churchill. LV Family: Black Brant. Launch Vehicle: Black Brant VB.
  • Auroral/Aeronomy mission - . Nation: Canada. Agency: NRCC. Apogee: 244 km (151 mi).

1975 January 30 - . 14:10 GMT - . Launch Site: El Arenosillo. LV Family: Skua. Launch Vehicle: Skua 4.
  • Aeronomy / ionosphere mission - . Nation: UK. Agency: DLR, INTA. Apogee: 117 km (72 mi).

1975 January 30 - . 15:02 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC41/1. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Cosmos 706 - . Payload: Oko #4. Mass: 1,250 kg (2,750 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Early warning satellite. Spacecraft: Oko. USAF Sat Cat: 7625 . COSPAR: 1975-007A. Apogee: 35,365 km (21,974 mi). Perigee: 4,977 km (3,092 mi). Inclination: 67.8000 deg. Period: 717.60 min. Covered Oko constellation planes 7/8 - 182 degree longitude of ascending node..

1975 January 31 - .
  • SAMSO awarded a $4,499,465 contract to Fairchild Space and Electronics Company for the development of the upper stage for the Global Positioning System. - . Spacecraft: Navstar.

1975 January 31 - . Launch Site: Kwajalein. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Magnetospheric mission - . Nation: USA. Agency: Sandia. Apogee: 185 km (114 mi).

1975 February 1 - . LV Family: Shuttle. Launch Vehicle: Space Shuttle.
  • Lower-cost shuttle external tank - . Nation: USA.

    Grumman completes a study of a lower-cost external tank. It would use a Nomex core, aluminium liner, and E-glass/epoxy exterior. Although lower in cost than the baseline aluminium tank, it would be slightly heavier. Given the critical weight growth problem with the shuttle, it was not proceeded with. In fact, a continuous program of weight reduction for the baseline tank was introduced. Batch 1 External Tanks were already from 500 to 1040 kg lighter than the first tank. Batch 2, set for delivery from June 1982 to Vandenberg AFB for USAF launches, were 2700 kg lighter. The final "lightweight tank" was over 4500 kg lighter. All of these translated into equivalent additional payload for the shuttle.


1975 February 1 - . 03:00 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 200A.
  • 13-in RC Flight 3 Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 220 km (130 mi).

1975 February 3 - . 09:16 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 350.
  • Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 253 km (157 mi).

1975 February 4 - .
  • Death of Anatoli Arkadyevich Blagonravov - . Nation: Russia. Related Persons: Blagonravov. Russian scientist. President, Academy Artillery Sciences 1946-1950, leading development of first Soviet sounding rockets. Soviet representative to UN COPUOS and negotiator with NASA on cooperative space projects in early 1960's..

1975 February 4 - . Launch Site: Wallops Island. Launch Platform: F-4. Launch Vehicle: Pedro Recruit.
  • FLAME test - . Nation: USA. Agency: USAF. Apogee: 17 km (10 mi).

    The first live demonstration flight of a Pedro Recruit sounding rocket occurred at Wallops Island, Virginia. It was a clear air launch of a carbon-phenolic nosetip from an F-4 aircraft. The launch, part of the Fighter Launched Advanced Materials Experiment (FLAME), was successful, but the payload was not recovered. Attempts on 20 September and 9 October to drop an inert Pedro Recruit rocket from an F-4 aircraft had failed. This was a DNA-sponsored experiment.


1975 February 4 - . Launch Site: Baikonur. Launch Complex: Baikonur LC140/18. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 February 5 - . Launch Site: Kwajalein. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Magnetospheric mission - . Nation: USA. Agency: Sandia. Apogee: 185 km (114 mi).

1975 February 5 - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • Arctic test - . Nation: USA. Agency: US Army. Apogee: 72 km (44 mi).

1975 February 5 - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • Arctic test - . Nation: USA. Agency: US Army. Apogee: 71 km (44 mi).

1975 February 5 - . 06:00 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima Q. LV Family: Mu. Launch Vehicle: ETV.
  • Test mission - . Nation: Japan. Agency: NASDA. Apogee: 167 km (103 mi).

1975 February 5 - . 13:15 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 707 - . Mass: 900 kg (1,980 lb). Nation: Russia. Agency: MO. Program: Tselina. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Tselina-O. Decay Date: 1980-09-07 . USAF Sat Cat: 7637 . COSPAR: 1975-008A. Apogee: 548 km (340 mi). Perigee: 491 km (305 mi). Inclination: 74.0000 deg. Period: 95.00 min. Investigation of the upper atmosphere and outer space. .

1975 February 5 - . 14:40 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF09. Launch Pad: LF09?. LV Family: Minuteman. Launch Vehicle: Minuteman 3. FAILURE: Failure.
  • OT GT29GM-1 operational test launch - . Nation: USA. Agency: USAF SAC. Apogee: 500 km (310 mi).

1975 February 6 - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • Arctic test - . Nation: USA. Agency: US Army. Apogee: 69 km (42 mi).

1975 February 6 - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • Arctic test - . Nation: USA. Agency: US Army. Apogee: 73 km (45 mi).

1975 February 6 - . 04:49 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 2-12 - . Payload: Molniya-2. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-2. Decay Date: 1985-07-04 . USAF Sat Cat: 7641 . COSPAR: 1975-009A. Apogee: 40,746 km (25,318 mi). Perigee: 653 km (405 mi). Inclination: 62.8000 deg. Period: 738.70 min. Decay date suspect Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network. .

1975 February 6 - . 16:35 GMT - . Launch Site: Kourou. Launch Complex: Kourou Diamant. LV Family: Diamant. Launch Vehicle: Diamant BP.4.
  • Starlette - . Payload: Starlette (BETA). Mass: 47 kg (103 lb). Nation: France. Agency: CNES. Class: Earth. Type: Geodetic satellite. Spacecraft: Starlette. USAF Sat Cat: 7646 . COSPAR: 1975-010A. Apogee: 1,108 km (688 mi). Perigee: 805 km (500 mi). Inclination: 49.8000 deg. Period: 104.20 min. Geodesic satellite. .

1975 February 6 - . 22:04 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2914.
  • SMS 2 - . Payload: SMS B. Mass: 627 kg (1,382 lb). Nation: USA. Agency: NASA Greenbelt. Class: Earth. Type: Weather satellite. Spacecraft: SMS. Completed Operations Date: 1982-08-11 . USAF Sat Cat: 7648 . COSPAR: 1975-011A. Apogee: 36,060 km (22,400 mi). Perigee: 35,941 km (22,332 mi). Inclination: 12.0000 deg. Period: 1,447.10 min.

    Synchronous Meteorological Satellite. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Americas at (GOES W) 115 deg W in 1975-1976; over the Pacific Ocean (GOES W) 135 deg W in 1976-1978; over the Atlantic Ocean (GOES E) 75 deg W in 1979-1981; over the Americas at 106 deg W in 1982 As of 29 August 2001 located at 123.04 deg W drifting at 2.760 deg W per day. As of 2007 Feb 27 located at 127.44E drifting at 2.742W degrees per day.


1975 February 7 - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • Arctic test - . Nation: USA. Agency: US Army. Apogee: 74 km (45 mi).

1975 February 7 - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • Arctic test - . Nation: USA. Agency: US Army. Apogee: 70 km (43 mi).

1975 February 7 - . 11:30 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 79 km (49 mi).

1975 February 8 - . 01:14 GMT - . Launch Site: Kwajalein. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 71 km (44 mi).

1975 February 9 - . 00:24 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.12 Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 170 km (100 mi).

1975 February 9 - . 00:24 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.09 Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 165 km (102 mi).

1975 February 9 - . 00:29 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.10 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 130 km (80 mi).

1975 February 9 - . 05:30 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.11 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 102 km (63 mi).

1975 February 9 - . 05:50 GMT - . Launch Site: Thumba. LV Family: Belier. Launch Vehicle: Centaure 2B.
  • ISRO 5.23 Ionosphere mission - . Nation: India. Agency: ISRO. Apogee: 150 km (90 mi).

1975 February 9 - . 07:08 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.13 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 130 km (80 mi).

1975 February 10 - . 05:28 GMT - . Launch Site: Fort Churchill. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Extreme ultraviolet airglow Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 142 km (88 mi).

1975 February 10 - .
1975 February 11 - . 02:16 GMT - . Launch Site: Fort Churchill. LV Family: Honest John. Launch Vehicle: Javelin.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 791 km (491 mi). Final successful Javelin launch..

1975 February 12 - . 03:30 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 708 - . Mass: 650 kg (1,430 lb). Nation: Russia. Agency: MO. Spacecraft Bus: KAUR-1. Spacecraft: Sfera. USAF Sat Cat: 7663 . COSPAR: 1975-012A. Apogee: 1,410 km (870 mi). Perigee: 1,368 km (850 mi). Inclination: 69.2000 deg. Period: 113.60 min. Investigation of the upper atmosphere and outer space. .

1975 February 12 - . 14:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 709 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-02-25 . USAF Sat Cat: 7664 . COSPAR: 1975-013A. Apogee: 310 km (190 mi). Perigee: 181 km (112 mi). Inclination: 62.8000 deg. Period: 89.40 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 February 13 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-69 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 February 13 - . 04:43 GMT - . Launch Site: Fort Churchill. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Auroral NO Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 136 km (84 mi).

1975 February 13 - . 13:50 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 200A.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 295 km (183 mi).

1975 February 14 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 84 km (52 mi).

1975 February 15 - . 01:36 GMT - . Launch Site: Kerguelen. LV Family: Stromboli. Launch Vehicle: Eridan.
  • ARAKS Eastward Ionosphere / plasma mission - . Nation: France. Agency: CNES. Apogee: 185 km (114 mi).

1975 February 17 - . 14:45 GMT - . Launch Site: Thule AFB. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, AN/DMQ-9- - . Nation: USA. Agency: MRN. Apogee: 73 km (45 mi).

1975 February 18 - . 19:15 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 87 km (54 mi).

1975 February 19 - . 05:35 GMT - . Launch Site: Thumba. LV Family: Belier. Launch Vehicle: Centaure 2B.
  • ISRO 5.25 CO.04 Ionosphere mission - . Nation: India. Agency: ISRO. Apogee: 160 km (90 mi).

1975 February 19 - . 08:37 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.15 Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 170 km (100 mi).

1975 February 19 - . 08:42 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.14 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 135 km (83 mi).

1975 February 19 - . 09:04 GMT - . Launch Site: Thumba. LV Family: Belier. Launch Vehicle: Centaure 2B.
  • ISRO 5.24 Ionosphere mission - . Nation: India. Agency: ISRO. Apogee: 164 km (101 mi).

1975 February 19 - . 13:32 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.16 Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 165 km (102 mi).

1975 February 20 - . 23:35 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas SLV-3D Centaur. FAILURE: Staging electrical disconnect.. Failed Stage: U.
1975 February 21 - . 16:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 82 km (50 mi).

1975 February 22 - . 01:03 GMT - . Launch Site: Fort Churchill. LV Family: Loki. Launch Vehicle: Loki Dart.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 65 km (40 mi).

1975 February 24 - .
  • Death of Nikolai Aleksandrovich Bulganin - . Nation: Russia. Related Persons: Bulganin. Russian Minister of Defense 1947-1949 and 1953-1955. Chaired Special Committee 2 1947-1949. Chairman of the Soviet Council of Ministers, and heavily involved in the negotiations over freedom of space issue for overflight of territories..

1975 February 24 - . 05:25 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-3C.
  • SS-03 Taiyo - . Payload: SRATS. Mass: 86 kg (189 lb). Nation: Japan. Agency: ISAS. Class: Earth. Type: Magnetosphere satellite. Spacecraft: SS. Decay Date: 1980-06-29 . USAF Sat Cat: 7671 . COSPAR: 1975-014A. Apogee: 3,125 km (1,941 mi). Perigee: 254 km (157 mi). Inclination: 31.5000 deg. Period: 120.20 min.

    Examined solar radiation, thermospheric structure. SRATS (Solar and Thermospheric Radiation Satellite) is the third Japanese scientific satellite, to study the intereffects of solar radiation and the thermosphere of the earth. National name: Taiyo. Launch time 0525 GMT.


1975 February 25 - . 01:35 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 7 AC.
  • X-ray telescope Solar x-ray mission - . Nation: UK. Agency: BAC. Apogee: 282 km (175 mi).

1975 February 25 - . 05:32 GMT - . Launch Site: Fort Churchill. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Auroral NO Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 138 km (85 mi).

1975 February 26 - .
  • Kamanin in hospital. - . Nation: Russia. Kamanin has to go to the hospital for the first time in his life..

1975 February 26 - . Launch Site: Baikonur. Launch Complex: Baikonur LC109. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Missile accuracy test launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 February 26 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-70 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 February 26 - . 09:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 710 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 14.00 days. Decay Date: 1975-03-12 . USAF Sat Cat: 7675 . COSPAR: 1975-015A. Apogee: 335 km (208 mi). Perigee: 176 km (109 mi). Inclination: 65.0000 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 February 26 - . 22:50 GMT - . Launch Site: Poker Flat. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Gerdian Condenser Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 104 km (64 mi).

1975 February 27 - . Launch Site: Baikonur. Launch Complex: Baikonur LC142/34. LV Family: R-36. Launch Vehicle: R-36 8K67MA.
  • State trials missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 February 28 - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 3 AC.
  • Ionosphere mission? - . Nation: UK. Agency: BAC. Apogee: 210 km (130 mi).

1975 February 28 - . Launch Site: Baikonur. Launch Complex: Baikonur PU33. LV Family: R-36. Launch Vehicle: R-36 8K67MA.
  • State trials missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 February 28 - . 14:02 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/2. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 711 - . Payload: Strela-1M no. 81. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7678 . COSPAR: 1975-016A. Apogee: 1,492 km (927 mi). Perigee: 1,462 km (908 mi). Inclination: 74.0000 deg. Period: 115.50 min. Eight satellites launched by a single carrier rocket..
  • Cosmos 714 - . Payload: Strela-1M no. 84. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7681 . COSPAR: 1975-016D. Apogee: 1,491 km (926 mi). Perigee: 1,445 km (897 mi). Inclination: 74.0000 deg. Period: 115.30 min.
  • Cosmos 713 - . Payload: Strela-1M no. 83. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7680 . COSPAR: 1975-016C. Apogee: 1,487 km (923 mi). Perigee: 1,396 km (867 mi). Inclination: 74.0000 deg. Period: 114.70 min.
  • Cosmos 715 - . Payload: Strela-1M no. 85. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7682 . COSPAR: 1975-016E. Apogee: 1,504 km (934 mi). Perigee: 1,470 km (910 mi). Inclination: 74.0000 deg. Period: 115.70 min.
  • Cosmos 716 - . Payload: Strela-1M no. 86. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7683 . COSPAR: 1975-016F. Apogee: 1,514 km (940 mi). Perigee: 1,479 km (919 mi). Inclination: 74.0000 deg. Period: 115.90 min.
  • Cosmos 717 - . Payload: Strela-1M no. 87. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7684 . COSPAR: 1975-016G. Apogee: 1,536 km (954 mi). Perigee: 1,480 km (910 mi). Inclination: 74.0000 deg. Period: 116.20 min.
  • Cosmos 718 - . Payload: Strela-1M no. 88. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7685 . COSPAR: 1975-016H. Apogee: 1,489 km (925 mi). Perigee: 1,429 km (887 mi). Inclination: 74.0000 deg. Period: 115.10 min.
  • Cosmos 712 - . Payload: Strela-1M no. 82. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7679 . COSPAR: 1975-016B. Apogee: 1,490 km (920 mi). Perigee: 1,411 km (876 mi). Inclination: 74.0000 deg. Period: 114.90 min.

1975 March 1 - .
  • Death of Fritz Vandersee - . Nation: Germany, USA. Related Persons: Vandersee. German engineer in WW2, member of the Rocket Team in the United States thereafter..

1975 March 1 - .
  • Death of Florence Lowe 'Pancho' Barnes - . Nation: USA. Related Persons: Barnes, Pancho. American pioneering aviatrix, from 1928 a barnstormer, air racer, Hollywood stunt flier; pioneered new air routes into Mexico. Opened a desert flying dude ranch in the 1930's, later a legendary watering hole for Edwards AFB test pilots..

1975 March 1 - . 01:00 GMT - . Launch Site: Poker Flat. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Infrared / OH Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 111 km (68 mi).

1975 March 1 - . 06:55 GMT - . Launch Site: Poker Flat. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 190 km (110 mi).

1975 March 3 - . 16:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHIR. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 89 km (55 mi).

1975 March 4 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 79 km (49 mi).

1975 March 4 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 74 km (45 mi).

1975 March 4 - . 07:39 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: Nike Javelin.
  • ICECAP 75A Auroral mission - . Nation: USA. Agency: DNA. Apogee: 130 km (80 mi).

1975 March 5 - . 16:36 GMT - . Launch Site: Kiruna. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • SSC S16 / 2 Aeronomy mission - . Nation: Sweden. Agency: SSC. Apogee: 102 km (63 mi).

1975 March 6 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF06. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • Trident SFT-101 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 March 6 - . 03:43 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: Nike Hydac.
  • ICECAP 75A Auroral mission - . Nation: USA. Agency: DNA. Apogee: 150 km (90 mi).

1975 March 6 - . 06:16 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: Nike Hydac.
  • ICECAP 75A Auroral mission - . Nation: USA. Agency: DNA. Apogee: 150 km (90 mi).

1975 March 7 - . 00:22 GMT - . Launch Site: Kiruna. Launch Complex: Kiruna C. LV Family: Belier. Launch Vehicle: Centaure 2C.
  • SSC S13 Aeronomy mission - . Nation: Sweden. Agency: SSC. Apogee: 109 km (67 mi).

1975 March 8 - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 200A.
  • Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 250 km (150 mi).

1975 March 9 - . 16:30 GMT - . Launch Site: Koroni. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 81 km (50 mi).

1975 March 10 - . 04:41 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4W. LV Family: Titan. Launch Vehicle: Titan 34B.
  • Jumpseat 4 - . Mass: 700 kg (1,540 lb). Nation: USA. Agency: NRO, USAF. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Jumpseat. USAF Sat Cat: 7687 . COSPAR: 1975-017A. Apogee: 39,337 km (24,442 mi). Perigee: 295 km (183 mi). Inclination: 63.5000 deg. Period: 702.00 min.

1975 March 10 - . 09:12 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: Nike Hydac.
  • ICECAP 75A Auroral mission - . Nation: USA. Agency: DNA. Apogee: 150 km (90 mi).

1975 March 10 - . 21:19 GMT - . Launch Site: Fort Churchill. LV Family: Aerobee. Launch Vehicle: Aerobee 150A MII.
  • JHU Aurora 10 Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 172 km (106 mi).

1975 March 11 - . Launch Site: Wallops Island. LV Family: Strypi. Launch Vehicle: Strypi VIIR.
  • MTV-II-2 re-entry vehicle test flight - . Nation: USA. Agency: Sandia. Apogee: 170 km (100 mi).

1975 March 11 - . 06:33 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: HJ Nike Javelin.
  • ICECAP Aurora mission - . Nation: USA. Agency: DARPA, DNA. Apogee: 183 km (113 mi).

1975 March 11 - . 06:34 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: Nike Javelin.
  • ICECAP 75A Auroral mission - . Nation: USA. Agency: DNA. Apogee: 130 km (80 mi).

1975 March 12 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-71 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 March 12 - . 02:32 GMT - . Launch Site: Fort Churchill. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 138 km (85 mi).

1975 March 12 - . 07:48 GMT - . Launch Site: Poker Flat. LV Family: Hydac. Launch Vehicle: Sergeant Hydac.
  • ICECAP 75A Auroral mission - . Nation: USA. Agency: AFCRL, DNA. Apogee: 500 km (310 mi).

1975 March 12 - . 08:55 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 719 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-03-25 . USAF Sat Cat: 7691 . COSPAR: 1975-018A. Apogee: 307 km (190 mi). Perigee: 175 km (108 mi). Inclination: 65.0000 deg. Period: 89.30 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 March 13 - . 17:02 GMT - . Launch Site: Kiruna. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • SSC S16 / 1 Aeronomy mission - . Nation: Sweden. Agency: SSC. Apogee: 106 km (65 mi).

1975 March 14 - . 04:52 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 6 AC.
  • DLR W-GR-67 Solar x-ray mission - . Nation: Germany. Agency: DFVLR. Apogee: 270 km (160 mi).

1975 March 15 - . 04:10 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 350.
  • Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 214 km (132 mi).

1975 March 15 - . 07:00 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 200A.
  • JHU UVT F8 (Saturn) Ultraviolet astronomy mission - . Nation: USA. Agency: NASA. Apogee: 261 km (162 mi).

1975 March 15 - . 16:34 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.17 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 147 km (91 mi).

1975 March 16 - .
  • Mariner 10 third flyby of Mercury - . Nation: USA. Spacecraft Bus: Mariner. Spacecraft: Mariner 10. The third and final Mercury encounter yielded primarily fields and particles data..

1975 March 16 - .
1975 March 16 - . 00:00 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.18 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 120 km (70 mi).

1975 March 17 - . 15:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 51 km (31 mi).

1975 March 18 - . Launch Site: Baikonur. Launch Complex: Baikonur LC103. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • SLI POR test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 March 18 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 78 km (48 mi).

1975 March 18 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 76 km (47 mi).

1975 March 18 - . 08:27 GMT - . Launch Site: Poker Flat. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 270 km (160 mi).

1975 March 19 - . 09:21 GMT - . Launch Site: Thumba. Launch Vehicle: Petrel.
  • ISRO-18.19 Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 107 km (66 mi).

1975 March 20 - .
  • X-24 Flight 48 - . Crew: Love, Michael. Payload: X-24B flight 20. Nation: USA. Related Persons: Love, Michael. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1537 kph. Maximum Altitude - 21450 m. Flight Time - 409 sec..

1975 March 20 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • 12cm Sphere - . Nation: USA. Agency: US Army. Apogee: 78 km (48 mi).

1975 March 21 - . 06:50 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 720 - . Payload: Zenit-4MT Mod. Mass: 4,000 kg (8,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MT. Duration: 11.00 days. Decay Date: 1975-04-01 . USAF Sat Cat: 7696 . COSPAR: 1975-019A. Apogee: 273 km (169 mi). Perigee: 212 km (131 mi). Inclination: 62.8000 deg. Period: 89.30 min. Military topography satellite; returned film capsule..

1975 March 22 - . 17:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHIR. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 89 km (55 mi).

1975 March 23 - . 11:18 GMT - . Launch Site: Poker Flat. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 230 km (140 mi).

1975 March 24 - .
  • Mariner 10 deactivated - . Nation: USA. Spacecraft Bus: Mariner. Spacecraft: Mariner 10. The vehicle was turned off after its onboard fuel was depleted..

1975 March 25 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 79 km (49 mi).

1975 March 25 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 82 km (50 mi).

1975 March 25 - . 22:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 86 km (53 mi).

1975 March 26 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-72 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 March 26 - . 08:50 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 721 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-04-07 . USAF Sat Cat: 7705 . COSPAR: 1975-020A. Apogee: 228 km (141 mi). Perigee: 208 km (129 mi). Inclination: 81.3000 deg. Period: 88.90 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 721 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-04-10 . USAF Sat Cat: 7721 . COSPAR: 1975-020F. Apogee: 215 km (133 mi). Perigee: 194 km (120 mi). Inclination: 81.3000 deg. Period: 88.59 min.

1975 March 27 - .
  • Shuttle Columbia fuselage assembly starts. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Columbia. Start long-lead fabrication aft fuselage, Columbia (OV-102).

1975 March 27 - .
  • Shuttle Enterprise fuselage complete. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise.

1975 March 27 - . 08:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 722 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-04-09 . USAF Sat Cat: 7709 . COSPAR: 1975-021A. Apogee: 337 km (209 mi). Perigee: 204 km (126 mi). Inclination: 71.4000 deg. Period: 89.90 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 March 27 - . 14:30 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Intercosmos 13 - . Payload: DS-U2-IK s/n 5. Mass: 400 kg (880 lb). Nation: Russia. Agency: IK. Program: DS. Class: Earth. Type: Ionosphere satellite. Spacecraft Bus: DS. Spacecraft: DS-U2-IK. Completed Operations Date: 1975-06-21 . Decay Date: 1980-09-02 . USAF Sat Cat: 7710 . COSPAR: 1975-022A. Apogee: 1,689 km (1,049 mi). Perigee: 284 km (176 mi). Inclination: 83.0000 deg. Period: 104.90 min. Upper atmospheric experiments. Study of dynamic processes in the earth's magnetosphere and polar ionosphere and investigation of low-frequency electromagnetic waves..

1975 March 28 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 70 km (43 mi).

1975 March 28 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • STS/Starute - . Nation: USA. Agency: US Army. Apogee: 73 km (45 mi).

1975 March 28 - . 17:15 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 62 km (38 mi).

1975 March 30 - . Launch Site: Baikonur. Launch Complex: Baikonur LC105. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • SLI POR test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 March 31 - . 15:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 60 km (37 mi).

1975 April 1 - . 12:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
  • Meteor 1-21 - . Payload: Meteor M no. 21. Mass: 3,800 kg (8,300 lb). Nation: Russia. Agency: MOM. Class: Earth. Type: Weather satellite. Spacecraft Bus: Meteor. Spacecraft: Meteor M 11F614. USAF Sat Cat: 7714 . COSPAR: 1975-023A. Apogee: 884 km (549 mi). Perigee: 853 km (530 mi). Inclination: 81.2000 deg. Period: 102.30 min. Acquisition of meteorological information needed for use by the weather service. .

1975 April 2 - . 11:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC90/19. Launch Pad: LC90/20. LV Family: R-36. Launch Vehicle: Tsiklon-2.
  • Cosmos 723 - . Mass: 3,800 kg (8,300 lb). Nation: Russia. Agency: MO. Program: RORSAT. Class: Surveillance. Type: Military naval surveillance radar satellite. Spacecraft Bus: Kosmoplan. Spacecraft: US-A. Decay Date: 1975-07-15 . USAF Sat Cat: 7797 . COSPAR: 1975-024D. Apogee: 961 km (597 mi). Perigee: 899 km (558 mi). Inclination: 64.7000 deg. Period: 103.60 min. Ocean surveillance; nuclear powered..

1975 April 3 - . Launch Site: Kwajalein. Launch Complex: Kwajalein Meck. Launch Vehicle: Spartan ABM.
  • Safeguard M2-345 Interceptor mission - . Nation: USA. Agency: US Army. Apogee: 100 km (60 mi).

1975 April 4 - . Launch Site: Salto di Quirra. Launch Vehicle: Alfa.
  • Spurious? - . Nation: Italy. Apogee: 50 km (31 mi). Final test flight of Italian submarine- and ship-launched ballistic missile. Dummy second stage. Project cancelled after Italy ratified Nuclear Non-Proliferation Treaty and decided to give up pursuit of an independent nuclear deterrent..

1975 April 5 - . 11:04 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511. FAILURE: During second-third stage separation third stage failed to separate from second stage but still ignited.. Failed Stage: 3.
  • Soyuz 18-1 - . Call Sign: Ural (Urals ). Crew: Lazarev, Makarov. Backup Crew: Klimuk, Sevastyanov. Payload: Soyuz 7K-T s/n 39. Mass: 6,830 kg (15,050 lb). Nation: Russia. Related Persons: Klimuk, Lazarev, Makarov, Sevastyanov. Agency: RVSN. Program: Salyut. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 18-1. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 0.0149 days. Decay Date: 1975-04-05 . Apogee: 192 km (119 mi).

    Carried Oleg Makarov, Vasili Lazarev for rendezvous with Salyut 4; but during second-third stage seperation third stage failed to separate from second stage but still ignited. The crew demanded that the abort procedures be implemented but ground control could not see the launch vehicle gyrations in their telemetry. Soyuz finally was separated from by ground control command at 192 km, and following a 20.6+ G reentry, the capsule landed in the Altai mountains, tumbled down a mountainside, and snagged in some bushes just short of a precipice. The crew was worried that they may have landed in China and would face internment, but after an hour sitting in the cold next to the capsule, they were discovered by locals speaking Russian. Total flight duration was 1574 km and flight time 21 minutes 27 seconds. Lazarev suffered internal injuries from the high-G reentry and tumble down the mountain side and never flew again. Both cosmonauts were denied their 3000 ruble spaceflight bonus pay and had to apeal all the way to Brezhnev before being paid.


1975 April 7 - . 11:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC90/19. Launch Pad: LC90/20. LV Family: R-36. Launch Vehicle: Tsiklon-2.
  • Cosmos 724 - . Mass: 3,800 kg (8,300 lb). Nation: Russia. Agency: MO. Program: RORSAT. Class: Surveillance. Type: Military naval surveillance radar satellite. Spacecraft Bus: Kosmoplan. Spacecraft: US-A. Decay Date: 1975-08-07 . USAF Sat Cat: 7922 . COSPAR: 1975-025B. Apogee: 943 km (585 mi). Perigee: 852 km (529 mi). Inclination: 65.6000 deg. Period: 102.90 min. Ocean surveillance; nuclear powered..

1975 April 8 - . 18:29 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC133/1. LV Family: R-12. Launch Vehicle: Kosmos 11K63.
  • Cosmos 725 - . Payload: DS-P1-Yu s/n 77. Mass: 400 kg (880 lb). Nation: Russia. Agency: MO. Program: DS. Class: Military. Type: Military target satellite. Spacecraft Bus: DS. Spacecraft: DS-P1-Yu. Completed Operations Date: 1976-01-02 . Decay Date: 1976-01-06 . USAF Sat Cat: 7730 . COSPAR: 1975-026A. Apogee: 481 km (298 mi). Perigee: 270 km (160 mi). Inclination: 71.0000 deg. Period: 92.10 min. Development of systems for air defence and the control of outer space..

1975 April 9 - . 23:58 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Thor. Launch Vehicle: Delta 1410.
  • Geos 3 - . Payload: GEOS C. Mass: 341 kg (751 lb). Nation: USA. Agency: NASA Wallops. Class: Astronomy. Type: Solar satellite. Spacecraft: Geos. USAF Sat Cat: 7734 . COSPAR: 1975-027A. Apogee: 848 km (526 mi). Perigee: 817 km (507 mi). Inclination: 115.0000 deg. Period: 101.60 min.

    Geodynamics Experimental Ocean Satellite. The mission of GEOS 3 (Geodynamics Experimental Ocean Satellite) was to provide the stepping stone between the National Geodetic Satellite Program (NGSP) and the Earth and Ocean Physics Application Program. It provided data to refine the geodetic and geophysical results of the NGSP and served as a test for new systems. A major achievment was the flight of a radar altimeter. Further mission objectives: intercomparison of tracking systems, investigation of solid-earth dynamic phenomena through precision laser tracking, refinement of orbit determination techniques, determination of interdatum ties and gravity models, and support of the calibration and position determination of NASA Spaceflight Tracking and Data Network (STDN) S-band tracking stations.


1975 April 10 - . 04:40 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170A.
  • Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 176 km (109 mi).

1975 April 10 - . 09:54 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Release, Sphere Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 216 km (134 mi).

1975 April 10 - . 09:54 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Release Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 219 km (136 mi).

1975 April 10 - . 10:00 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Mass Spectrometer Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 211 km (131 mi).

1975 April 11 - . 07:57 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 726 - . Mass: 810 kg (1,780 lb). Nation: Russia. Agency: MO. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: KAUR-1. Spacecraft: Parus. USAF Sat Cat: 7736 . COSPAR: 1975-028A. Apogee: 991 km (615 mi). Perigee: 952 km (591 mi). Inclination: 83.0000 deg. Period: 104.50 min. Military navigation satellite..

1975 April 12 - . 14:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 610. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 April 13 - . 00:51 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3W. LV Family: Atlas. Launch Vehicle: Atlas F. FAILURE: First stage failure due to explosion in flame pit at lift-off.. Failed Stage: 1.
  • P 72-2 - . Nation: USA. Agency: USAF. Class: Technology. Type: Military technology satellite. Spacecraft Bus: P. Spacecraft: P 72. Decay Date: 1975-04-12 .

    Space Test Program flight P72-2 was launched; it carried two infrared radiometers and three other payloads. The launch failed when the Atlas F launch vehicle malfunctioned. A lack of deluge water and collection in the flame bucket of a kerosene/liquid oxygen gel led to the explosion of the gel on lift-off, damaging one of the Atlas engines and leading to complete engine failure during the ascent.


1975 April 13 - . 08:15 GMT - . Launch Site: Poker Flat. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 299 km (185 mi).

1975 April 13 - . 09:46 GMT - . Launch Site: Poker Flat. LV Family: Sergeant. Launch Vehicle: Castor.
  • EXCEDE Active plasma mission - . Nation: USA. Agency: USAF. Apogee: 100 km (60 mi).

1975 April 13 - . 10:38 GMT - . Launch Site: Poker Flat. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 299 km (185 mi).

1975 April 14 - . 17:53 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC41/1. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 3-02 - . Payload: Molniya-3 s/n 12. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-3. Decay Date: 1988-11-29 . USAF Sat Cat: 7738 . COSPAR: 1975-029A. Apogee: 39,323 km (24,434 mi). Perigee: 174 km (108 mi). Inclination: 61.9000 deg. Period: 700.50 min. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network. .

1975 April 15 - .
  • Death of John Barron McKay at Lancaster, California. Liver failure stemming from X-15 crash injuries. - . Nation: USA. Related Persons: McKay. American NASA test pilot, 1952-1971. Flew into space on X-15 Flight 150, but seriously injured in an X-15 crash in 1962..

1975 April 16 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-73 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 April 16 - . 08:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 727 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 12.00 days. Decay Date: 1975-04-28 . USAF Sat Cat: 7742 . COSPAR: 1975-030A. Apogee: 334 km (207 mi). Perigee: 172 km (106 mi). Inclination: 65.0000 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 April 16 - . 09:15 GMT - . Launch Site: Poker Flat. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 299 km (185 mi).

1975 April 17 - . Launch Site: Kwajalein. Launch Complex: Kwajalein Meck. Launch Vehicle: Spartan ABM.
  • Safeguard M2-545 Interceptor mission - . Nation: USA. Agency: US Army. Apogee: 100 km (60 mi).

1975 April 18 - .
  • X-24 Flight 49 - . Crew: Manke. Payload: X-24B flight 21. Nation: USA. Related Persons: Manke. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1279 kph. Maximum Altitude - 17650 m. Flight Time - 450 sec..

1975 April 18 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 645. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-9 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 April 18 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 645. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-9 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 April 18 - . Launch Site: Tonopah. Launch Vehicle: Nike. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: Sandia. Apogee: 0 km (0 mi).

1975 April 18 - . 10:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 728 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 11.00 days. Decay Date: 1975-04-29 . USAF Sat Cat: 7745 . COSPAR: 1975-031A. Apogee: 311 km (193 mi). Perigee: 209 km (129 mi). Inclination: 72.8000 deg. Period: 89.70 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 728 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-05-16 . USAF Sat Cat: 7779 . COSPAR: 1975-031G. Apogee: 313 km (194 mi). Perigee: 199 km (123 mi). Inclination: 72.8000 deg. Period: 89.63 min.

1975 April 18 - . 16:48 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4W. LV Family: Titan. Launch Vehicle: Titan 24B.
  • OPS 4883 - . Payload: KH-8 no. 44 / Agena D. Mass: 3,000 kg (6,600 lb). Nation: USA. Agency: NRO, USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: WS-117. Spacecraft: KH-8. Decay Date: 1975-06-05 . USAF Sat Cat: 7747 . COSPAR: 1975-032A. Apogee: 398 km (247 mi). Perigee: 133 km (82 mi). Inclination: 110.5000 deg. Period: 89.80 min. KH-8 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1975 April 19 - . 07:30 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar LC107/2. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Aryabhata - . Payload: ISS. Mass: 360 kg (790 lb). Nation: India. Agency: ISRO. Class: Earth. Type: Atmosphere satellite. Spacecraft: Aryabhata. Decay Date: 1992-02-11 . USAF Sat Cat: 7752 . COSPAR: 1975-033A. Apogee: 409 km (254 mi). Perigee: 398 km (247 mi). Inclination: 50.7000 deg. Period: 92.60 min. Atmospheric research. Experimental satellite for satellite technology and some scientific experiments. Launched from a cosmodrome in the USSR. .

1975 April 21 - . 08:11 GMT - . Launch Site: Thumba. LV Family: Belier. Launch Vehicle: Centaure 2B.
  • ISRO 5.26 CO.22 Ionosphere mission - . Nation: India. Agency: ISRO. Apogee: 157 km (97 mi).

1975 April 21 - . 09:07 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Release Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 213 km (132 mi).

1975 April 21 - . 09:07 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Release Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 220 km (130 mi).

1975 April 21 - . 09:12 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Mass Spectrometer Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 222 km (137 mi).

1975 April 21 - . 17:30 GMT - . Launch Site: Thumba. LV Family: Belier. Launch Vehicle: Centaure 2B.
  • ISRO 5.27 CO.21 Ionosphere mission - . Nation: India. Agency: ISRO. Apogee: 156 km (96 mi).

1975 April 22 - . 21:10 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 729 - . Mass: 725 kg (1,598 lb). Nation: Russia. Agency: MO. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: KAUR-1. Spacecraft: Tsiklon satellite. USAF Sat Cat: 7768 . COSPAR: 1975-034A. Apogee: 1,007 km (625 mi). Perigee: 971 km (603 mi). Inclination: 83.0000 deg. Period: 104.90 min. Military navigation satellite..

1975 April 23 - . Launch Site: Baikonur. Launch Complex: Baikonur LC173. Launch Vehicle: MR-UR-100.
  • Operational test launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 April 24 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 633. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-10? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 April 24 - . Launch Site: Baikonur. Launch Complex: Baikonur LC106. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 April 24 - . 08:05 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 730 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 12.00 days. Decay Date: 1975-05-06 . USAF Sat Cat: 7770 . COSPAR: 1975-035A. Apogee: 234 km (145 mi). Perigee: 210 km (130 mi). Inclination: 81.3000 deg. Period: 89.00 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 April 25 - . 04:13 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS TMA / Barium release Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 214 km (132 mi).

1975 April 25 - . 04:13 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS TMA / Barium release Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 220 km (130 mi).

1975 April 25 - . 04:18 GMT - . Launch Site: Fort Churchill. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • AEOLUS Mass Spectrometer Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 217 km (134 mi).

1975 April 26 - . 15:10 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 609. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 April 28 - . 01:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 88 km (54 mi).

1975 April 29 - . LV Family: Proton. Launch Vehicle: UR-500MK.
  • UR-500MK designed - . Nation: Russia. Related Persons: Chelomei, Glushko.

    In response to the Ministry of Defence's guidelines for third generation launch vehicles, the Ministry of General Machine Building issued instructions for Chelomei to study boosters meeting the military's requirements. These included Lox/Kerosene propellants in place of the toxic N2O4/UDMH favoured previously. Chelomei's competitor in the design, Glushko, was then head of NPO Energia which included Glushko's former OKB-456 engine design bureau. Therefore Chelomei was forced to propose using Kuznetsov Lox/Kerosene engines from the cancelled N1 moon program. The use of existing Proton tankage tooling for the stages and the Kuznetsov engines would allow a high-performance vehicle to be developed at minimum cost. However Chelomei was out of favour, Kuznetsov was discredited after the N1 fiasco, and Glushko was ascendant. The proposal stood no chance. Glushko's Zenit launch vehicle became the accepted solution.


1975 April 29 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-74 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 April 29 - . 10:24 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 1-29 - . Payload: Molniya-1. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-1. USAF Sat Cat: 7780 . COSPAR: 1975-036A. Apogee: 38,379 km (23,847 mi). Perigee: 1,983 km (1,232 mi). Inclination: 63.8000 deg. Period: 717.90 min. Uncertain if Molniya-1T model was Molniya-1 or Molniya-1T. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network..

1975 April 30 - . 15:00 GMT - . Launch Site: Kerguelen. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 85 km (52 mi).

1975 May 1 - .
  • Death of Walter T Bonney at Minneapolis, Hennepin, MN. - . Nation: USA. Related Persons: Bonney. American journalist. Worked for NACA from 1949. NASA Director of Public Relations, 1958-1960. Avco Director of Public Relations 1960-1971..

1975 May 1 - . Launch Pad: Atlantic Ocean, 60.0 N x 30.0 W. Launch Platform: ZUB. Launch Vehicle: MR-12.
  • Nation: Russia. Apogee: 150 km (90 mi).

1975 May 2 - . Launch Vehicle: Alfa.
  • Alfa SLBM program cancelled - . Nation: Italy. Under US pressure Italy had signed the Nuclear Non-proliferation Treaty on 2 May 1975. Work on nuclear-tipped ballistic missiles ended..

1975 May 2 - .
  • Birth of Dorothy Marie 'Dottie' Metcalf-Lindenburger - . Nation: USA. Related Persons: Metcalf-Lindenburger. American teacher mission specialist astronaut, 2004-on..

1975 May 2 - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant VI.
  • 12cm Sphere - . Nation: USA. Agency: US Army. Apogee: 78 km (48 mi).

1975 May 3 - . 19:00 GMT - . Launch Site: South Uist. Launch Vehicle: Petrel.
  • Electron density Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 111 km (68 mi).

1975 May 4 - . 11:22 GMT - . Launch Site: El Arenosillo. LV Family: Skua. Launch Vehicle: Skua 2.
  • Aeronomy / ionosphere mission - . Nation: UK. Agency: DLR, INTA. Apogee: 85 km (52 mi).

1975 May 5 - . 16:00 GMT - . Launch Site: Kerguelen. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 94 km (58 mi).

1975 May 6 - .
  • X-24 Flight 50 - . Crew: Love, Michael. Payload: X-24B flight 22. Nation: USA. Related Persons: Love, Michael. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1541 kph. Maximum Altitude - 22370 m. Flight Time - 448 sec..

1975 May 7 - . 04:20 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF26. Launch Pad: LF26?. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • Research and development launch - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). Minuteman III Production Verification Missile 10 was successfully launched. This was the first Minuteman to be launched with the new Wing VI command data buffer hybrid explicit software. .

1975 May 7 - . 22:45 GMT - . Launch Site: San Marco. LV Family: Scout. Launch Vehicle: Scout F-1.
  • Explorer 53 - . Payload: SAS C. Mass: 195 kg (429 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Astronomy. Type: Solar satellite. Spacecraft: SAS. Decay Date: 1979-04-09 . USAF Sat Cat: 7788 . COSPAR: 1975-037A. Apogee: 507 km (315 mi). Perigee: 498 km (309 mi). Inclination: 3.0000 deg. Period: 94.70 min. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1975 May 7 - . 23:35 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2914.
  • Anik A3 (Telesat 3) - . Payload: Anik A3. Mass: 286 kg (630 lb). Nation: Canada. Agency: Telesat. Program: Anik. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 333. Completed Operations Date: 1984-11-23 . USAF Sat Cat: 7790 . COSPAR: 1975-038A. Apogee: 35,851 km (22,276 mi). Perigee: 35,845 km (22,273 mi). Inclination: 9.0000 deg. Period: 1,439.20 min.

    Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit over the Americas at 104 deg W in 1975-1976; over the Americas at 114 deg W in 1976-1984 As of 4 September 2001 located at 32.38 deg E drifting at 0.812 deg W per day. As of 2007 Mar 9 located at 138.81W drifting at 0.829W degrees per day.


1975 May 8 - . 13:30 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHOK. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 87 km (54 mi).

1975 May 9 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF06. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • SFT-102 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 May 9 - . Launch Site: Barking Sands. LV Family: Sandhawk. Launch Vehicle: Terrier Sandhawk.
  • Monitoring mission - . Nation: USA. Agency: Sandia. Apogee: 406 km (252 mi).

1975 May 9 - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 HRV. LV Family: Stonechat. Launch Vehicle: Falstaff.
1975 May 11 - . 08:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHOK. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 85 km (52 mi).

1975 May 12 - . Launch Site: Barking Sands. LV Family: Malemute. Launch Vehicle: Terrier Malemute.
  • Test mission - . Nation: USA. Agency: Sandia. Apogee: 485 km (301 mi).

1975 May 13 - . 16:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHOK. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 85 km (52 mi).

1975 May 14 - . Launch Site: Barking Sands. LV Family: Tomahawk. Launch Vehicle: Terrier Tomahawk.
  • Plasma Barium release mission - . Nation: USA. Agency: Sandia. Apogee: 360 km (220 mi).

1975 May 14 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-75 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 May 15 - . Launch Site: Barking Sands. LV Family: Tomahawk. Launch Vehicle: Terrier Tomahawk.
  • Plasma Barium release mission - . Nation: USA. Agency: Sandia. Apogee: 360 km (220 mi).

1975 May 15 - . 15:25 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee F.
  • Test mission - . Nation: USA. Agency: NASA. Apogee: 224 km (139 mi).

1975 May 16 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF02. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • PAVE PEPPER test - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). Special Test Missile-9W (STM-9W) was the first Pave Pepper flight test. It was successful. The program was designed to evaluate the use of increased numbers of reentry vehicles on the Minuteman III missile. .

1975 May 17 - . 10:32 GMT - . Launch Site: Kourou. Launch Complex: Kourou Diamant. LV Family: Diamant. Launch Vehicle: Diamant BP.4.
  • Pollux - . Payload: D-5A. Mass: 35 kg (77 lb). Nation: France. Agency: CNES. Class: Earth. Type: Geodetic satellite. Spacecraft: D. Decay Date: 1975-08-05 . USAF Sat Cat: 7801 . COSPAR: 1975-039A. Apogee: 1,256 km (780 mi). Perigee: 299 km (185 mi). Inclination: 30.0000 deg. Period: 100.40 min.

    D5A: Weight 36 kg. Testing in space of a hydrazine catalytic decomposition micropropulsion unit. Responsible organization: Societe Europeene de Propulsion. D5B: Weight 76 kg. Testing in space of the CACTUS accelerometer (ultrasensitive triaxial capacitive accelerometric sensor). Responsible organization: ONERA, Chatillon-sous-Berneux, France.

  • Castor - . Payload: D-5B. Mass: 77 kg (169 lb). Nation: France. Agency: CNES. Class: Earth. Type: Geodetic satellite. Spacecraft: D. Decay Date: 1979-02-18 . USAF Sat Cat: 7802 . COSPAR: 1975-039B. Apogee: 1,275 km (792 mi). Perigee: 277 km (172 mi). Inclination: 29.9000 deg. Period: 100.30 min.

    D5A: Weight 36 kg. Testing in space of a hydrazine catalytic decomposition micropropulsion unit. Responsible organization: Societe Europeene de Propulsion. D5B: Weight 76 kg. Testing in space of the CACTUS accelerometer (ultrasensitive triaxial capacitive accelerometric sensor). Responsible organization: ONERA, Chatillon-sous-Berneux, France.


1975 May 19 - . 15:00 GMT - . Launch Site: Thumba. Launch Vehicle: M-100.
  • ISRO 8.192? - . Nation: Russia. Apogee: 89 km (55 mi).

1975 May 20 - . 14:03 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan IIIC. FAILURE: Transtage gyro platform lost power; attitude control lost; orbit too low.. Failed Stage: U.
  • DSCS II-05 - . Payload: DSCS II F-5 / OPS 9435. Mass: 566 kg (1,247 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Decay Date: 1975-05-26 . USAF Sat Cat: 7807 . COSPAR: 1975-040A. Apogee: 256 km (159 mi). Perigee: 160 km (90 mi). Inclination: 28.6000 deg. Period: 88.60 min.

    The third pair of Defense Satellite Communications System II satellites was launched; the launch failed due to a malfunction in the Transtage of the Titan IIIC launch vehicle. Unusable orbit. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

  • DSCS II-06 - . Payload: DSCS II F-6 / OPS 9436. Mass: 566 kg (1,247 lb). Nation: USA. Agency: USAF. Program: DSCS. Class: Communications. Type: Military communications satellite. Spacecraft: DSCS II. Decay Date: 1975-05-26 . USAF Sat Cat: 7808 . COSPAR: 1975-040B. Apogee: 256 km (159 mi). Perigee: 160 km (90 mi). Inclination: 28.6000 deg. Period: 88.60 min.

    The third pair of Defense Satellite Communications System II satellites was launched; the launch failed due to a malfunction in the Transtage of the Titan IIIC launch vehicle. Unusable orbit. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).


1975 May 21 - . 06:59 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 731 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-06-02 . USAF Sat Cat: 7810 . COSPAR: 1975-041A. Apogee: 296 km (183 mi). Perigee: 203 km (126 mi). Inclination: 65.0000 deg. Period: 89.50 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 731 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-06-19 . USAF Sat Cat: 7885 . COSPAR: 1975-041H. Apogee: 286 km (177 mi). Perigee: 199 km (123 mi). Inclination: 64.9000 deg. Period: 89.35 min.

1975 May 22 - .
  • X-24 Flight 51 - . Crew: Manke. Payload: X-24B flight 23. Nation: USA. Related Persons: Manke. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Max. altitude. Maximum Speed - 1744 kph. Maximum Altitude - 22370 m. Flight Time - 461 sec..

1975 May 22 - . 22:04 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36A. LV Family: Atlas. Launch Vehicle: Atlas SLV-3D Centaur.
  • Intelsat 4 F-1 - . Mass: 727 kg (1,602 lb). Nation: International. Agency: Intelsat. Program: Intelsat. Class: Communications. Type: Civilian communications satellite. Spacecraft Bus: HS 312 / HS 351 / HS 353. Spacecraft: Intelsat 4. Completed Operations Date: 1987-10-27 . USAF Sat Cat: 7815 . COSPAR: 1975-042A. Apogee: 36,128 km (22,448 mi). Perigee: 36,016 km (22,379 mi). Inclination: 8.9000 deg. Period: 1,450.70 min.

    Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit Positioned in geosynchronous orbit over the Indian Ocean at 63 deg E in 1976-1978; over the Atlantic Ocean 17.0 deg W in 1978; over the Atlantic Ocean 18.5 deg W in 1979-1981; over the Pacific Ocean 174 deg E in 1982; over the Atlantic Ocean 53 deg W in 1983-1984; over the Atlantic Ocean 50 deg W in 1984-1987 As of 30 August 2001 located at 111.08 deg W drifting at 3.657 deg W per day. As of 2007 Mar 11 located at 95.13E drifting at 3.657W degrees per day.


1975 May 23 - . Launch Site: Vandenberg. Launch Complex: Vandenberg.
  • First use of the Minuteman I booster for ABRES - . Nation: USA. First use of the Minuteman I booster, replacing the Atlas, for the ABRES program..

1975 May 23 - .
  • Enterprise wings complete. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise. Wings on dock, Palmdale-less elevons, seals and main gear doors-Enterprise (OV-101).

1975 May 23 - . Launch Site: , Vandenberg.
  • Nosetip Technology Vehicle-03 was successfully launched from Vandenberg Air Force Base, California. - .

1975 May 23 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF03. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • ABRES NTV-3 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 May 24 - . 01:00 GMT - . Launch Site: Chilca. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 338 km (210 mi).

1975 May 24 - . 03:22 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Thor. Launch Vehicle: Thor Burner 2A.
  • DMSP-Block-5C F2 - . Payload: DMSP 10533 / OPS 6226. Mass: 194 kg (427 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft Bus: DMSP Block 4/5 satellites. Spacecraft: DMSP Block 5C. USAF Sat Cat: 7816 . COSPAR: 1975-043A. Apogee: 880 km (540 mi). Perigee: 794 km (493 mi). Inclination: 98.7000 deg. Period: 101.70 min. Defense Meteorological Satellite Program..

1975 May 24 - . 06:55 GMT - . Launch Site: Chilca. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 324 km (201 mi).

1975 May 24 - . 14:58 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz 11A511.
  • Soyuz 18 - . Call Sign: Kavkas (Caucasus ). Crew: Klimuk, Sevastyanov. Backup Crew: Kovalyonok, Ponomaryov. Payload: Soyuz 7K-T s/n 40. Mass: 6,825 kg (15,046 lb). Nation: Russia. Related Persons: Klimuk, Kovalyonok, Ponomaryov, Sevastyanov. Agency: MOM. Program: Salyut. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 18. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 62.97 days. Decay Date: 1975-07-26 . USAF Sat Cat: 7818 . COSPAR: 1975-044A. Apogee: 230 km (140 mi). Perigee: 186 km (115 mi). Inclination: 51.7000 deg. Period: 88.60 min. Manned two crew. Docked with Salyut 4. Joint experiments with the Salyut scientific orbital station. The crew remained aloft aboard the station during the Apollo-Soyuz Test Project joint flight..

1975 May 25 - . 20:40 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHIR. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 86 km (53 mi).

1975 May 26 - . 15:00 GMT - . Launch Site: Thumba. Launch Vehicle: M-100.
  • ISRO 8.195? - . Nation: Russia. Apogee: 84 km (52 mi).

1975 May 27 - .
  • Enterprise vertical stabilizer complete. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise. Vertical stabilizer on dock, Palmdale (main fin box only), Enterprise (OV-101).

1975 May 27 - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 127 km (78 mi).

1975 May 27 - . 08:01 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 127 km (78 mi).

1975 May 28 - . Launch Site: Baikonur. Launch Complex: Baikonur LC105. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 May 28 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-77 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 May 28 - . 00:25 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 732 - . Payload: Strela-1M no. 89. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7820 . COSPAR: 1975-045A. Apogee: 1,470 km (910 mi). Perigee: 1,404 km (872 mi). Inclination: 74.0000 deg. Period: 114.60 min. Eight satellites launched by a single carrier rocket..
  • Cosmos 739 - . Payload: Strela-1M no. 96. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7828 . COSPAR: 1975-045H. Apogee: 1,472 km (914 mi). Perigee: 1,423 km (884 mi). Inclination: 74.0000 deg. Period: 114.80 min.
  • Cosmos 738 - . Payload: Strela-1M no. 95. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7827 . COSPAR: 1975-045G. Apogee: 1,509 km (937 mi). Perigee: 1,469 km (912 mi). Inclination: 74.0000 deg. Period: 115.70 min.
  • Cosmos 737 - . Payload: Strela-1M no. 94. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7826 . COSPAR: 1975-045F. Apogee: 1,529 km (950 mi). Perigee: 1,470 km (910 mi). Inclination: 74.0000 deg. Period: 116.00 min.
  • Cosmos 736 - . Payload: Strela-1M no. 93. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7825 . COSPAR: 1975-045E. Apogee: 1,487 km (923 mi). Perigee: 1,469 km (912 mi). Inclination: 74.0000 deg. Period: 115.50 min.
  • Cosmos 735 - . Payload: Strela-1M no. 92. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7824 . COSPAR: 1975-045D. Apogee: 1,474 km (915 mi). Perigee: 1,462 km (908 mi). Inclination: 74.0000 deg. Period: 115.30 min.
  • Cosmos 733 - . Payload: Strela-1M no. 90. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7822 . COSPAR: 1975-045B. Apogee: 1,554 km (965 mi). Perigee: 1,470 km (910 mi). Inclination: 74.0000 deg. Period: 116.30 min.
  • Cosmos 734 - . Payload: Strela-1M no. 91. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 7823 . COSPAR: 1975-045C. Apogee: 1,472 km (914 mi). Perigee: 1,443 km (896 mi). Inclination: 74.0000 deg. Period: 115.00 min.

1975 May 28 - . 07:29 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 740 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-06-10 . USAF Sat Cat: 7821 . COSPAR: 1975-046A. Apogee: 327 km (203 mi). Perigee: 173 km (107 mi). Inclination: 65.0000 deg. Period: 89.50 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 May 28 - . 20:26 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 191 km (118 mi).

1975 May 28 - . 23:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 617. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • DASO-34 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 May 29 - . Launch Site: Kostroma. Launch Vehicle: UR-100.
  • Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 May 29 - . 00:02 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 617. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • DASO-35 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 May 29 - . 03:55 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 131 km (81 mi).

1975 May 30 - . 04:35 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 187 km (116 mi).

1975 May 30 - . 06:45 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 741 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-06-11 . USAF Sat Cat: 7877 . COSPAR: 1975-047A. Apogee: 231 km (143 mi). Perigee: 210 km (130 mi). Inclination: 81.3000 deg. Period: 88.90 min.

    Zenit-2M (area survey photo reconnaissance) satellite used for earth resources studies as part of 'Gektor-Priroda' project. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation.


1975 May 31 - .
  • European Space Agency founded. - . Nation: Europe.

1975 May 31 - . Launch Site: Kourou. Launch Complex: Kourou ALFS. LV Family: Veronique. Launch Vehicle: Veronique 61M.
  • FAUST Ultraviolet Astronomy mission - . Nation: France. Agency: CNES. Apogee: 172 km (106 mi). FU216 FAUST, UV astronomy / Stab mission..

1975 June 1 - . Launch Pad: Atlantic Ocean, 60.0 N x 30.0 W. Launch Platform: ZUB. Launch Vehicle: MR-12.
  • Nation: Russia. Apogee: 150 km (90 mi).

1975 June 2 - . 05:11 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 187 km (116 mi).

1975 June 3 - . 09:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar LC107/2. LV Family: R-14. Launch Vehicle: Kosmos 11K65M. FAILURE: First stage failed 84 seconds after launch.. Failed Stage: 1.
  • Intercosmos 14 - . Payload: DS-U3-IK s/n 5. Mass: 390 kg (850 lb). Nation: Russia. Agency: RVSN. Program: Intercosmos. Class: Earth. Type: Magnetosphere satellite. Spacecraft Bus: DS. Spacecraft: DS-U3-IK. Measurements of the sun; used for Interkosmos launches. Payload included East European experiments to study solar UV, X-ray effects on upper atmosphere. Investigation of solar radiation and its effect on the atmosphere of the earth..

1975 June 3 - . 13:21 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 742 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 12.00 days. Decay Date: 1975-06-15 . USAF Sat Cat: 7900 . COSPAR: 1975-048A. Apogee: 355 km (220 mi). Perigee: 178 km (110 mi). Inclination: 62.9000 deg. Period: 89.80 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 June 3 - . 16:41 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 204 km (126 mi).

1975 June 4 - . Launch Site: Wallops Island.
  • The sixth and last flight of the Pedro Recruit sounding rockets for the FLAME program occurred at Wallops Island, Virginia. - .

1975 June 4 - . Launch Site: Baikonur. Launch Complex: Baikonur LC101. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • SLI? - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 June 5 - . LV Family: R-7. Launch Vehicle: Soyuz-U2.
  • Soyuz 11A511U2 authorised. - . Nation: Russia. Central Committee of the Communist Party and Council of Soviet Ministers Decree 178 'On development of the 11A511U2 launch vehicle' was issued..

1975 June 5 - . 01:38 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 1-30 - . Payload: Molniya-1 s/n 24. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-1. Decay Date: 1987-08-12 . USAF Sat Cat: 7903 . COSPAR: 1975-049A. Apogee: 38,307 km (23,802 mi). Perigee: 121 km (75 mi). Inclination: 63.4000 deg. Period: 679.10 min. Uncertain if Molniya-1T model was Molniya-1 or Molniya-1T. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network..
  • SRET 2 - . Payload: SRET 2 (MAS 2). Mass: 30 kg (66 lb). Nation: France. Agency: CNES. Class: Technology. Type: Navigation technology satellite. Spacecraft: SRET. Decay Date: 1988-07-10 . USAF Sat Cat: 7910 . COSPAR: 1975-049B. Apogee: 40,825 km (25,367 mi). Perigee: 513 km (318 mi). Inclination: 62.8000 deg. Period: 737.80 min.

    SRET 2 technological research and study satellite. Launched from Soviet Union with a Soviet launch vehicle with the Molniya satellite. Mass 30 kg. Study of the behaviour of a passive cryogenic radiation system, study of the aging of thermal casings and pl astic films.


1975 June 6 - .
  • X-24 Flight 52 - . Crew: Love, Michael. Payload: X-24B flight 24. Nation: USA. Related Persons: Love, Michael. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1786 kph. Maximum Altitude - 21980 m. Flight Time - 474 sec..

1975 June 7 - . Launch Site: Baikonur. Launch Complex: Baikonur LC109. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • SLI? - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 June 7 - . 16:07 GMT - . Launch Site: Chilca. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 259 km (160 mi).

1975 June 7 - . 16:25 GMT - . Launch Site: Chilca. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 197 km (122 mi).

1975 June 8 - . 02:38 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24. LV Family: Proton. Launch Vehicle: Proton-K/D.
  • Venera 9 - . Payload: 4V-1 s/n 660. Mass: 4,936 kg (10,882 lb). Nation: Russia. Agency: MOM. Program: Venera. Class: Venus. Type: Venus probe. Spacecraft Bus: 4MV. Spacecraft: Venera 4V-1. USAF Sat Cat: 7915 . COSPAR: 1975-050A. Apogee: 112,200 km (69,700 mi). Perigee: 1,510 km (930 mi). Inclination: 34.1500 deg. Period: 2,898.00 min.

    Combined Venus orbiter/lander mission. After separation of the lander, the orbiter spacecraft entered Venus orbit and acted as a communications relay for the lander and explored cloud layers and atmospheric parameters. On October 20, 1975, the Descent Craft was separated from the Orbiter, and landing was made with the sun near zenith at 05:13 GMT on October 22. The Descent Craft included a system of circulating fluid to distribute the heat load. This system, plus precooling prior to entry, permitted operation of the spacecraft for 53 min after landing. The landing was about 2,200 km from the Venera 10 landing site. Preliminary results indicated: (A) clouds 30-40 km thick with bases at 30-35 km altitude, (B) atmospheric constituents including HCl, HF, Br, and I, (C) surface pressure about 90 (earth) atmospheres, (D) surface temperature 485 deg C, (E) light levels comparable to those at earth midlatitudes on a cloudy summer day, and (F) successful TV photography showing shadows, no apparent dust in the air, and a variety of 30-40 cm rocks which were not eroded. Venera 9 and 10 were the first probes to send back black and white pictures from the Venusian surface. They were supposed to make 360 degree panoramic shots, but on both landers one of two camera covers failed to come off, restricting their field of view to 180 degrees. Parameters are for Venus orbit.


1975 June 8 - . 18:30 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4E. LV Family: Titan. Launch Vehicle: Titan IIID.
  • KH-9 no. 10 - . Mass: 13,300 kg (29,300 lb). Nation: USA. Agency: CIA, NRO. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-9. Decay Date: 1975-11-05 . USAF Sat Cat: 7918 . COSPAR: 1975-051A. Apogee: 272 km (169 mi). Perigee: 157 km (97 mi). Inclination: 96.3000 deg. Period: 88.70 min. KH-9 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1975 June 9 - . 18:42 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170. FAILURE: Failure.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 29 km (18 mi).

1975 June 10 - . 10:15 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC35. LV Family: Aerobee. Launch Vehicle: Aerobee 150.
  • Density / Laser Backscatter Aeronomy mission - . Nation: USA. Agency: AFCRL. Apogee: 158 km (98 mi).

1975 June 10 - . 13:18 GMT - . Launch Site: Andoya. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Ferdinand 42 Auroral mission - . Nation: Norway. Agency: NTNF. Apogee: 100 km (60 mi).

1975 June 11 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF08. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • OT GT30GM operational test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 June 11 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-78 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 June 12 - . 08:12 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Thor. Launch Vehicle: Delta 2910.
  • Nimbus 6 - . Payload: Nimbus F. Mass: 829 kg (1,827 lb). Nation: USA. Agency: NASA Greenbelt. Class: Earth. Type: Weather satellite. Spacecraft: Nimbus. USAF Sat Cat: 7924 . COSPAR: 1975-052A. Apogee: 1,114 km (692 mi). Perigee: 1,101 km (684 mi). Inclination: 100.0000 deg. Period: 107.40 min.

    Environmental research. The experiments selected for Nimbus-6 were the earth radiation budget (ERB), electrically scanning microwave radiometer (ESMR), high-resolution infrared radiation sounder (HIRS), limb radiance inversion radiometer (LRIR), pressure modulated radiometer (PMR), scanning microwave spectrometer (SCAMS), temperature-humidity infrared radiometer (THIR), tracking and data relay experiment (T+DRE), and the tropical wind energy conversion and reference level experiment (TWERLE). This complement of advanced sensors was capable of mapping tropospheric temperature, water vapor abundance, and cloud water content; providing vertical profiles of temperature, ozone, and water vapor; transmitting real-time data to a geostationary spacecraft (ATS 6); and yielding data on the earth's radiation budget.


1975 June 12 - . 12:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 743 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-06-25 . USAF Sat Cat: 7925 . COSPAR: 1975-053A. Apogee: 331 km (205 mi). Perigee: 181 km (112 mi). Inclination: 62.8000 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 June 13 - . Launch Site: Baikonur. Launch Complex: Baikonur LC173. Launch Vehicle: MR-UR-100.
  • State trials missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 June 14 - .
1975 June 14 - . 03:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24. LV Family: Proton. Launch Vehicle: Proton-K/D.
  • Venera 10 - . Payload: 4V-1 s/n 661. Mass: 5,033 kg (11,095 lb). Nation: Russia. Agency: MOM. Program: Venera. Class: Venus. Type: Venus probe. Spacecraft Bus: 4MV. Spacecraft: Venera 4V-1. USAF Sat Cat: 7947 . COSPAR: 1975-054A. Apogee: 113,900 km (70,700 mi). Perigee: 1,620 km (1,000 mi). Inclination: 29.5000 deg. Period: 2,963.00 min.

    The orbiter spacecraft entered Venus orbit and was separated from the lander on October 23, 1975. The lander touched down with the sun near zenith, at 05:17 GMT, on October 25. A system of circulating fluid was used to distribute the heat load. This system, plus precooling prior to entry, permitted operation of the spacecraft for 65 min after landing. During descent, heat dissipation and deceleration were accomplished sequentially by protective hemispheric shells, three parachutes, a disk-shaped drag brake, and a compressible, metal, doughnut-shaped, landing cushion. The landing was about 2,200 km distant from Venera 9. Preliminary results provided: (A) profile of altitude (km)/pressure (earth atmospheres) / temperature (deg C) of 42/3.3/158, 15/37/363, and 0/92/465, (B) successful TV photography showing large pancake rocks with lava or other weathered rocks in between, and (C) surface wind speed of 3.5 m/s. Venera 9 and 10 were the first probes to send back black and white pictures from the Venusian surface. They were supposed to make 360 degree panoramic shots, but on both landers one of two camera covers failed to come off, restricting their field of view to 180 degrees.


1975 June 16 - . Launch Site: Baikonur. Launch Vehicle: UR-100N. FAILURE: Failure.
  • Operational missile test - . Nation: Russia. Agency: RVSN. Apogee: 0 km (0 mi).

1975 June 17 - . 23:40 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 88 km (54 mi).

1975 June 18 - . Launch Site: Vandenberg. Launch Complex: Vandenberg WTR. Launch Platform: SSBN 602. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 June 18 - . Launch Site: Vandenberg. Launch Complex: Vandenberg WTR. Launch Platform: SSBN 602. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 June 18 - . Launch Site: Vandenberg. Launch Complex: Vandenberg WTR. Launch Platform: SSBN 602. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 June 18 - . Launch Site: Vandenberg. Launch Complex: Vandenberg WTR. Launch Platform: SSBN 602. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 June 18 - . Launch Site: Vandenberg. Launch Complex: Vandenberg WTR. Launch Platform: SSBN 602. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 June 18 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-79 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 June 18 - . 09:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC13. LV Family: Atlas. Launch Vehicle: Atlas SLV-3A Agena D.
  • Canyon 6 - . Payload: Canyon Improved / OPS 4966. Mass: 700 kg (1,540 lb). Nation: USA. Agency: NRO, USAF. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Canyon. USAF Sat Cat: 7963 . COSPAR: 1975-055A. Apogee: 40,800 km (25,300 mi). Perigee: 30,200 km (18,700 mi). Inclination: 9.0000 deg. Period: 1,422.00 min.

1975 June 19 - . 20:00 GMT - . Launch Site: Barking Sands. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 61 km (37 mi).

1975 June 20 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF09. Launch Pad: LF09?. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • OT GT31GM operational test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 June 20 - . 06:54 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
  • Cosmos 744 - . Payload: Tselina-D no. 7. Mass: 2,500 kg (5,500 lb). Nation: Russia. Agency: MOM. Program: Tselina. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Tselina-D. Decay Date: 1991-10-12 . USAF Sat Cat: 7968 . COSPAR: 1975-056A. Apogee: 380 km (230 mi). Perigee: 367 km (228 mi). Inclination: 81.2000 deg. Period: 92.00 min.

1975 June 21 - . 11:43 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 1910.
  • OSO 8 - . Payload: OSO I. Mass: 1,066 kg (2,350 lb). Nation: USA. Agency: NASA Greenbelt. Class: Astronomy. Type: Solar satellite. Spacecraft: OSO. Decay Date: 1986-07-09 . USAF Sat Cat: 7970 . COSPAR: 1975-057A. Apogee: 553 km (343 mi). Perigee: 539 km (334 mi). Inclination: 32.9000 deg. Period: 95.60 min. Orbiting Solar Observatory. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1975 June 23 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 627. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-11? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 23 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 627. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-11? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 24 - .
  • Start structural assembly (MPTA-098) - . Nation: USA. Program: STS.

1975 June 24 - . Launch Site: Biscarosse. Launch Complex: Biscarosse BLB. LV Family: MSBS. Launch Vehicle: SSBS S2.
  • Operational test - . Nation: France. Agency: DMA. Apogee: 1,000 km (600 mi).

1975 June 24 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 656. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-12? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 24 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 656. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-12? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 24 - . 11:18 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 6 AC.
  • Soft X-ray 1D tel X-ray astronomy mission - . Nation: UK. Agency: BAC. Apogee: 180 km (110 mi).

1975 June 24 - . 12:05 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC133/1. LV Family: R-12. Launch Vehicle: Kosmos 11K63.
  • Cosmos 745 - . Payload: DS-P1-Yu s/n 76. Mass: 400 kg (880 lb). Nation: Russia. Agency: MO. Program: DS. Class: Military. Type: Military target satellite. Spacecraft Bus: DS. Spacecraft: DS-P1-Yu. Completed Operations Date: 1976-03-07 . Decay Date: 1976-03-12 . USAF Sat Cat: 7982 . COSPAR: 1975-058A. Apogee: 514 km (319 mi). Perigee: 264 km (164 mi). Inclination: 71.0000 deg. Period: 92.40 min. Development of systems for air defence and the control of outer space..

1975 June 25 - .
  • X-24 Flight 53 - . Crew: Manke. Payload: X-24B flight 25. Nation: USA. Related Persons: Manke. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1427 kph. Maximum Altitude - 17680 m. Flight Time - 426 sec..

1975 June 25 - . Launch Site: Baikonur. Launch Complex: Baikonur LC142/34. LV Family: R-36. Launch Vehicle: R-36 8K67.
  • OS-67 test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 June 25 - . 13:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 746 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-07-08 . USAF Sat Cat: 7985 . COSPAR: 1975-059A. Apogee: 325 km (201 mi). Perigee: 180 km (110 mi). Inclination: 62.8000 deg. Period: 89.50 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 June 26 - . 16:00 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHOK. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 87 km (54 mi).

1975 June 27 - . 13:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 747 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-07-09 . USAF Sat Cat: 7990 . COSPAR: 1975-060A. Apogee: 280 km (170 mi). Perigee: 204 km (126 mi). Inclination: 62.8000 deg. Period: 89.30 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 747 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-07-17 . USAF Sat Cat: 8013 . COSPAR: 1975-060F. Apogee: 281 km (174 mi). Perigee: 188 km (116 mi). Inclination: 62.8000 deg. Period: 89.19 min.

1975 June 27 - . 20:10 GMT - . Launch Site: Wallops Island. LV Family: Malemute. Launch Vehicle: Terrier Malemute. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: NASA. Apogee: 283 km (175 mi).

1975 June 28 - . 15:40 GMT - . Launch Site: Sea Launch Area. Launch Pad: UNKO. Launch Platform: SHOK. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 83 km (51 mi).

1975 June 30 - . Launch Site: Baikonur. Launch Complex: Baikonur LC140/18. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 July 1 - .
  • SAMSO's responsibility for the Vela Program came to an end. - . Spacecraft: Vela.

1975 July 1 - . Launch Site: Kapustin Yar. LV Family: Temp-2S. Launch Vehicle: Pioner.
  • Test mission - . Nation: Russia. Agency: RVSN. Apogee: 500 km (310 mi).

1975 July 1 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF26. Launch Pad: LF26?. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • Research and development launch - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 July 1 - . Launch Site: Baikonur. Launch Complex: Baikonur LC177. Launch Vehicle: MR-UR-100.
  • State trials missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 July 2 - . Launch Site: , Vandenberg. LV Family: Minuteman.
  • Production verification missile (PVM)-ll was successfully launched from Vandenberg AFB to evaluate Stage III thrust termination capability of the hybrid explicit flight program. - .

1975 July 2 - . Launch Site: Nizhniy Tagil. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 July 2 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 85 km (52 mi).

1975 July 3 - .
  • Death of Aleksei Ivanovich Shakhurin - . Nation: Russia. Related Persons: Shakhurin. Russian government official. People's Commissar for Aviation Industries 1940-1946..

1975 July 3 - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 6 AC.
  • Ionosphere mission? - . Nation: UK. Agency: BAC. Apogee: 270 km (160 mi).

1975 July 3 - . 13:40 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 748 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-07-16 . USAF Sat Cat: 8006 . COSPAR: 1975-061A. Apogee: 303 km (188 mi). Perigee: 190 km (110 mi). Inclination: 62.8000 deg. Period: 89.40 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 July 4 - . Launch Site: Baikonur. Launch Vehicle: UR-100N. FAILURE: Failure.
  • Operational missile test - . Nation: Russia. Agency: RVSN. Apogee: 0 km (0 mi).

1975 July 4 - . 00:56 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 749 - . Mass: 900 kg (1,980 lb). Nation: Russia. Agency: MO. Program: Tselina. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Tselina-O. Decay Date: 1980-09-26 . USAF Sat Cat: 8009 . COSPAR: 1975-062A. Apogee: 550 km (340 mi). Perigee: 509 km (316 mi). Inclination: 74.0000 deg. Period: 95.30 min. Replaced Cosmos 610. Possible ELINT satellite..

1975 July 7 - . 14:20 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 71 km (44 mi).

1975 July 8 - . 05:05 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 2-13 - . Payload: Molniya-2. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-2. USAF Sat Cat: 8015 . COSPAR: 1975-063A. Apogee: 38,492 km (23,917 mi). Perigee: 1,887 km (1,172 mi). Inclination: 63.9000 deg. Period: 718.30 min. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network. .

1975 July 9 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 86 km (53 mi).

1975 July 10 - . 08:00 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • 13-in RC Flight 4 Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 179 km (111 mi).

1975 July 11 - . Launch Site: Malmstrom AFB. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • With the completion of the Force Modernization Program at Squadron 20, Malmstrom AFB, Montana, there were 450 Minuteman II and 550 Minuteman III missiles under the operational control of SAC. - . The Force Modernization Program had lasted nine years..

1975 July 11 - . 04:15 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
  • Meteor 2-01 - . Payload: Meteor-2 no. 1. Mass: 2,750 kg (6,060 lb). Nation: Russia. Agency: MOM. Class: Earth. Type: Weather satellite. Spacecraft Bus: Meteor. Spacecraft: Meteor-2. USAF Sat Cat: 8026 . COSPAR: 1975-064A. Apogee: 876 km (544 mi). Perigee: 844 km (524 mi). Inclination: 81.3000 deg. Period: 102.20 min. Acquisition of meteorological information needed for use by the weather service. .

1975 July 12 - . 15:30 GMT - . Launch Site: Thule AFB. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, AN/DMQ-9- - . Nation: USA. Agency: MRN. Apogee: 65 km (40 mi).

1975 July 13 - . 12:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 62 km (38 mi).

1975 July 14 - . 14:04 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 63 km (39 mi).

1975 July 15 - .
  • X-24 Flight 54 - . Crew: Love, Michael. Payload: X-24B flight 26. Nation: USA. Related Persons: Love, Michael. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1685 kph. Maximum Altitude - 21180 m. Flight Time - 415 sec..

1975 July 15 - . 03:35 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: R-5. Launch Vehicle: R-5V.
  • Ionosphere mission - . Nation: Russia. Agency: AN. Apogee: 503 km (312 mi).

1975 July 15 - . 12:20 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Soyuz 19 (ASTP) - . Call Sign: Soyuz (Union ). Crew: Kubasov, Leonov. Backup Crew: Filipchenko, Rukavishnikov. Support Crew: Andreyev, Dzhanibekov, Ivanchenkov, Romanenko. Payload: Soyuz ASTP s/n 75 (EPSA). Mass: 6,790 kg (14,960 lb). Nation: Russia. Related Persons: Andreyev, Dzhanibekov, Filipchenko, Ivanchenkov, Kubasov, Leonov, Romanenko, Rukavishnikov. Agency: MOM. Program: ASTP. Class: Manned. Type: Manned spacecraft. Flight: Apollo (ASTP), Soyuz 19 (ASTP). Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-TM. Duration: 5.94 days. Decay Date: 1975-07-21 . USAF Sat Cat: 8030 . COSPAR: 1975-065A. Apogee: 220 km (130 mi). Perigee: 186 km (115 mi). Inclination: 51.8000 deg. Period: 88.50 min.

    Soyuz 19 initial orbital parameters were 220.8 by 185.07 kilometres, at the desired inclination of 51.80°, while the period of the first orbit was 88.6 minutes. On 17 July the two spacecraft docked. The crew members rotated between the two spacecraft and conducted various mainly ceremonial activities. Leonov was on the American side for 5 hours, 43 minutes, while Kubasov spent 4:57 in the command and docking modules.

    After being docked for nearly 44 hours, Apollo and Soyuz parted for the first time and were station-keeping at a range of 50 meters. The Apollo crew placed its craft between Soyuz and the sun so that the diameter of the service module formed a disk which blocked out the sun. After this experiment Apollo moved towards Soyuz for the second docking.

    Three hours later Apollo and Soyuz undocked for the second and final time. The spacecraft moved to a 40 m station-keeping distance so that an ultraviolet absorption experiment could be performed. With all the joint flight activities completed, the ships went on their separate ways.


1975 July 15 - . 19:50 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39B. Launch Platform: LUT1. LV Family: Saturn I. Launch Vehicle: Saturn IB.
  • Apollo (ASTP) - . Call Sign: Apollo. Crew: Brand, Slayton, Stafford. Backup Crew: Bean, Evans, Lousma. Payload: Apollo CSM 111. Mass: 14,768 kg (32,557 lb). Nation: USA. Related Persons: Bean, Brand, Evans, Lousma, Slayton, Stafford. Agency: NASA Houston. Program: ASTP. Class: Moon. Type: Manned lunar spacecraft. Flight: Apollo (ASTP), Soyuz 19 (ASTP). Spacecraft: Apollo CSM. Duration: 9.06 days. Decay Date: 1975-07-24 . USAF Sat Cat: 8032 . COSPAR: 1975-066A. Apogee: 166 km (103 mi). Perigee: 152 km (94 mi). Inclination: 51.7000 deg. Period: 87.60 min.

    This flight marked the culmination of the Apollo-Soyuz Test Project, a post-moon race 'goodwill' flight to test a common docking system for space rescue. 15 July 1975 began with the flawless launch of Soyuz 19. Apollo followed right on schedule. Despite a stowaway - a 'super Florida mosquito' - the crew accomplished a series of rendezvous manoeuvres over the next day resulting in rendezvous with Soyuz 19. At 11:10 on 17 July the two spacecraft docked. The crew members rotated between the two spacecraft and conducted various mainly ceremonial activities. Stafford spent 7 hours, 10 minutes aboard Soyuz, Brand 6:30, and Slayton 1:35. Leonov was on the American side for 5 hours, 43 minutes, while Kubasov spent 4:57 in the command and docking modules.

    After being docked for nearly 44 hours, Apollo and Soyuz parted for the first time and were station-keeping at a range of 50 meters. The Apollo crew placed its craft between Soyuz and the sun so that the diameter of the service module formed a disk which blocked out the sun. This artificial solar eclipse, as viewed from Soyuz, permitted photography of the solar corona. After this experiment Apollo moved towards Soyuz for the second docking.

    Three hours later Apollo and Soyuz undocked for the second and final time. The spacecraft moved to a 40 m station-keeping distance so that the ultraviolet absorption (UVA MA-059) experiment could be performed. This was an effort to more precisely determine the quantities of atomic oxygen and atomic nitrogen existing at such altitudes. Apollo, flying out of plane around Soyuz, projected monochromatic laser-like beams of light to retro-reflectors mounted on Soyuz. On the 150-meter phase of the experiment, light from a Soyuz port led to a misalignment of the spectrometer, but on the 500-meter pass excellent data were received; on the 1,000-meter pass satisfactory results were also obtained.

    With all the joint flight activities completed, the ships went on their separate ways. On 20 July the Apollo crew conducted earth observation, experiments in the multipurpose furnace (MA-010), extreme ultraviolet surveying (MA-083), crystal growth (MA-085), and helium glow (MA-088). On 21 July Soyuz 19 landed safely in Kazakhstan. Apollo continued in orbit on 22-23 July to conduct 23 independent experiments - including a doppler tracking experiment (MA-089) and geodynamics experiment (MA-128) designed to verify which of two techniques would be best suited for studying plate tectonics from earth orbit.

    After donning their space suits, the crew vented the command module tunnel and jettisoned the docking module. The docking module would continue on its way until it re-entered the earth's atmosphere and burned up in August 1975.

  • Docking Module 2 - . Payload: Apollo DM-2. Mass: 2,012 kg (4,435 lb). Nation: USA. Agency: NASA Houston. Program: ASTP. Spacecraft Bus: Apollo CSM. Spacecraft: Apollo ASTP Docking Module. Decay Date: 1975-08-02 . USAF Sat Cat: 8042 . COSPAR: 1975-066C. Apogee: 222 km (137 mi). Perigee: 201 km (124 mi). Inclination: 51.7000 deg. Period: 88.73 min.
  • Saturn S-IVB-210 - . Payload: Saturn S-IVB-210. Nation: USA. Agency: NASA Huntsville. Program: ASTP. Decay Date: 1975-07-16 . USAF Sat Cat: 8033 . COSPAR: 1975-066B. Apogee: 166 km (103 mi). Perigee: 152 km (94 mi). Inclination: 51.7000 deg. Period: 87.60 min.

1975 July 16 - .
  • ASTP - Rendezvous Maneuvers - . Nation: USA. Program: ASTP. Flight: Apollo (ASTP), Soyuz 19 (ASTP). Apollo and Soyuz modify their orbits in preparation for the docking in space planned for the next day.. Additional Details: here....

1975 July 16 - .
  • Skylab 2 - Wakeup Song: Good Morning Sunshine - . Flight: Skylab 2 . "Good Morning Sunshine" Chicago - (Apollo crew).

1975 July 17 - .
  • ASTP - The 'Handshake in Space'. - . Nation: USA. Program: ASTP. Flight: Apollo (ASTP), Soyuz 19 (ASTP). Apollo and Soyuz successfully dock and members of the American and Russian crews shake hands in space for the first time. With the Soviet-American détente crumbling, it will be the last such docking for 20 years.. Additional Details: here....

1975 July 17 - . 09:10 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC133/1. LV Family: R-12. Launch Vehicle: Kosmos 11K63.
  • Cosmos 750 - . Payload: DS-P1-I s/n 15. Mass: 400 kg (880 lb). Nation: Russia. Agency: MO. Program: DS. Class: Military. Type: Military target satellite. Spacecraft Bus: DS. Spacecraft: DS-P1-I. Completed Operations Date: 1976-01-30 . Decay Date: 1977-09-29 . USAF Sat Cat: 8036 . COSPAR: 1975-067A. Apogee: 803 km (498 mi). Perigee: 272 km (169 mi). Inclination: 71.0000 deg. Period: 95.40 min. Operational radar target for the ABM forces..

1975 July 18 - .
  • ASTP-Crew transfers between the docked vehicles. - . Nation: USA. Program: ASTP. Flight: Apollo (ASTP), Soyuz 19 (ASTP).

    The crew members take turns visiting each other's capsules, a complicated procedure due to the need to keep both spacecraft manned at all times and for the transfer crews to transition in the docking module between the different Soyuz and Apollo cabin atmospheres. Additional Details: here....


1975 July 18 - .
  • Skylab 2 - Wakeup Song: Midnight in Moscow - . Flight: Skylab 2 . "Midnight in Moscow" - (Apollo crew).

1975 July 19 - .
  • ASTP - Joint Apollo/Soyuz flight activities - . Nation: USA. Program: ASTP. Flight: Apollo (ASTP), Soyuz 19 (ASTP).

    During day five of the flight, the crews concentrated on docking exercises and experiments that involved the two ships in the undocked mode. During the interval between the first undocking and the second docking, the Apollo crew placed its craft between Soyuz and the sun so that the diameter of the service module formed a disk which blocked out the sun. This artificial solar eclipse, as viewed from Soyuz, permitted Leonov and Kubasov to photograph the solar corona. Additional Details: here....


1975 July 19 - .
  • Skylab 2 - Wakeup Song: Tenderness - . Flight: Skylab 2 . "Tenderness" Maya Kristalinskaya. Crew did not wake until later in morning - (Apollo crew).

1975 July 20 - .
  • ASTP - Separate Apollo/Soyuz activities - . Nation: USA. Program: ASTP. Flight: Apollo (ASTP), Soyuz 19 (ASTP). Apollo and Soyuz, now flying in separate orbits, conduct independent experiments prior to their return to earth.. Additional Details: here....

1975 July 20 - .
  • Skylab 2 - Wakeup Song: Tenderness - . Flight: Skylab 2 . "Tenderness" Maya Kristalinskaya . This time the crew heard it. (Apollo crew).

1975 July 21 - .
  • ASTP - Soyuz returns to earth, Apollo remains in orbit. - . Nation: Russia. Program: ASTP. Flight: Apollo (ASTP), Soyuz 19 (ASTP).

    Following a rest period of nearly 10 hours, the Soyuz crewmen advised the ground that they were awake and that all systems were normal. The deorbit burn came exactly on time (5:09 in Houston), and the Soyuz crew landed safely in Kazakhstan. For the remaining three and a half days, Stafford, Slayton, and Brand would concentrate on their experiments, but in many respects the saga of Apollo and Soyuz had come to an end.


1975 July 21 - . 15:31 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC36. LV Family: Black Brant. Launch Vehicle: Black Brant VC.
  • HRTS-1 Solar ultraviolet mission - . Nation: USA. Agency: NASA. Apogee: 220 km (130 mi).

1975 July 21 - .
1975 July 22 - .
  • Aeronutronic Ford Corporation was awarded a $7.25 million contract to modify the satellite tracking sets at the DSP ground stations. - . Spacecraft: DSP.

1975 July 22 - . 21:21 GMT - . Launch Site: Barking Sands. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 58 km (36 mi).

1975 July 23 - .
  • Apollo (ASTP) in-flight experiments - . Nation: USA. Program: ASTP. Flight: Apollo (ASTP).

    Some minor experiment hardware problems developed during the final days of the mission, but for the most part the crew members worked through their flight plan - which included 23 independent experiments - with few difficulties. After a relatively quiet day of work on the 22nd, the major part of the 23rd was devoted to preparing for and conducting the doppler tracking experiment (MA-089). The day was also marked by a press conference from space and jettison of the docking module. Additional Details: here....


1975 July 23 - . LV Family: Shuttle. Launch Vehicle: Space Shuttle.
  • Shuttle SSME engine chamber Test - . Nation: USA. The first full thrust chamber test is completed..

1975 July 23 - . Launch Site: Yurya. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 July 23 - . 13:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 751 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-08-04 . USAF Sat Cat: 8040 . COSPAR: 1975-068A. Apogee: 313 km (194 mi). Perigee: 197 km (122 mi). Inclination: 62.8000 deg. Period: 89.60 min. Area survey photo reconnaissance satellite; returned film capsule..

1975 July 24 - .
  • Skylab 2 - Wakeup Song: Redneck Mother - . Flight: Skylab 2 . "Redneck Mother" Jerry Jeff Walker (Apollo crew) .

1975 July 24 - . 05:20 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 120 km (70 mi).

1975 July 24 - . 19:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 752 - . Mass: 900 kg (1,980 lb). Nation: Russia. Agency: MO. Class: Surveillance. Type: Radar calibration target. Spacecraft: Taifun-1. Decay Date: 1981-02-28 . USAF Sat Cat: 8043 . COSPAR: 1975-069A. Apogee: 514 km (319 mi). Perigee: 481 km (298 mi). Inclination: 65.8000 deg. Period: 94.50 min. Radar calibration mission..

1975 July 24 - .
  • Landing of Apollo (ASTP) - . Return Crew: Brand, Slayton, Stafford. Nation: USA. Related Persons: Brand, Slayton, Stafford. Program: ASTP. Flight: Apollo (ASTP).

    Apollo (ASTP) landed at 21:18 GMT, 7.3 km from the recovery ship New Orleans. It was the last splashdown of an American space capsule. However the flight of the last Apollo spacecraft was marred by the fact that the crew almost perished while the capsule was descending under its parachute.

    A failure in switchology led the automatic landing sequence to be not armed at the same time the reaction control system was still active. When the Apollo hadn't begun the parachute deployment sequence by 7,000 metres altitude, Brand hit the manual switches for the apex cover and the drogues. The manual deployment of the drogue chutes caused the CM to sway, and the reaction control system thrusters worked vigorously to counteract that motion. When the crew finally armed the automatic ELS 30 seconds later, the thruster action terminated.

    During that 30 seconds, the cabin was flooded with a mixture of toxic unignited propellants from the thrusters. Prior to drogue deployment, the cabin pressure relief valve had opened automatically, and in addition to drawing in fresh air it also brought in unwanted gases being expelled from the roll thrusters located about 0.6 meter from the relief valve. Brand manually deployed the main parachutes at about 2,700 meters despite the gas fumes in the cabin.

    By the time of splashdown, the crew was nearly unconscious from the fumes, Stafford managed to get an oxygen mask over Brand's face. He then began to come around. When the command module was upright in the water, Stafford opened the vent valve, and with the in-rush of air the remaining fumes disappeared. The crew ended up with a two-week hospital stay in Honolulu. For Slayton, it also meant the discovery of a small lesion on his left lung and an exploratory operation that indicated it was a non-malignant tumour. Additional Details: here....


1975 July 25 - . 18:40 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 39 km (24 mi).

1975 July 26 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF02. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • PAVE PEPPER test - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi). Special Test Missile (STM)-IOW was successfully launched from Vandenberg AFB. .

1975 July 26 - . 13:28 GMT - . Launch Site: Jiuquan. Launch Complex: Jiuquan LA2B. LV Family: CZ. Launch Vehicle: Feng Bao 1.
  • JSSW 3 - . Payload: JSSW 3. Mass: 1,107 kg (2,440 lb). Nation: China. Agency: MAI. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: JSSW. Decay Date: 1975-09-14 . USAF Sat Cat: 8053 . COSPAR: 1975-070A. Apogee: 455 km (282 mi). Perigee: 190 km (110 mi). Inclination: 69.0000 deg. Period: 90.90 min. Photo surveillance; radio transmission. .

1975 July 26 - .
1975 July 28 - . 17:44 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC36. LV Family: Black Brant. Launch Vehicle: Black Brant VC.
  • Solar ultraviolet mission - . Nation: USA. Agency: NASA. Apogee: 278 km (172 mi).

1975 July 29 - . 16:34 GMT - . Launch Site: Wallops Island. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 81 km (50 mi).

1975 July 30 - . 11:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 85 km (52 mi).

1975 July 31 - . 13:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 753 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-08-13 . USAF Sat Cat: 8059 . COSPAR: 1975-071A. Apogee: 330 km (200 mi). Perigee: 181 km (112 mi). Inclination: 62.8000 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 Aug - . Launch Site: , Vandenberg.
  • The final test of the Launch Equipment Room Full-Up Floor Test Program was completed at Vandenberg AFB. - .

    This test program began in January 1973 with tests of the complete Wing V upgraded floor shock isolation system with mass-simulated electronics (Block I) and continued with tests of the Wing V upgraded floor with operating electronics (Block II), tests of single isolators (Block III), and tests of a Wing VI upgraded floor with mass-simulated electronics (Block IV). The highly successful program not only qualified the upgraded floor to design criteria, but also demonstrated that the subsystem had inherently harder shock capability than was required.


1975 Aug - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 10C.
  • M-3S SRMC test - . Nation: Japan. Agency: ISAS. Apogee: 100 km (60 mi).

1975 August 1 - . 14:45 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 72 km (44 mi).

1975 August 2 - . 01:14 GMT - . Launch Site: Kwajalein. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 76 km (47 mi).

1975 August 3 - .
  • Death of Karel Jan 'Charlie' Bossart - . Nation: Belgium, USA. Related Persons: Bossart. Belgian-American Chief Designer of the Atlas rocket. Conceived many innovative features - balloon propellant tanks, common fuel/oxidizer bulkheads, jettisonable booster engines, separable nose cone, and gimballed engines..

1975 August 4 - . 15:10 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 74 km (45 mi).

1975 August 5 - .
  • X-24 Flight 55 - . Crew: Manke. Payload: X-24B flight 27. Nation: USA. Related Persons: Manke. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1381 kph. Maximum Altitude - 18290 m. Flight Time - 420 sec..

1975 August 6 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 90 km (55 mi).

1975 August 7 - . Launch Site: Vandenberg. Launch Complex: Vandenberg 395-C. LV Family: Titan. Launch Vehicle: Titan II.
  • DG-2 - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 August 7 - . Launch Site: Kwajalein. Launch Complex: Kwajalein RN. LV Family: Sergeant. Launch Vehicle: Castor.
  • Technology mission - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1975 August 7 - . 03:30 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • Density / Bremss Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 174 km (108 mi).

1975 August 7 - . 16:10 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 119 km (73 mi).

1975 August 8 - . 09:23 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 65 km (40 mi).

1975 August 9 - . 01:48 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Thor. Launch Vehicle: Delta 2913.
  • COS-B - . Payload: COS B. Mass: 280 kg (610 lb). Nation: Europe. Agency: ESA. Class: Technology. Type: Navigation technology satellite. Spacecraft: COS. Decay Date: 1986-01-18 . USAF Sat Cat: 8062 . COSPAR: 1975-072A. Apogee: 99,002 km (61,516 mi). Perigee: 442 km (274 mi). Inclination: 90.3000 deg. Period: 2,203.90 min.

    Eighth CERS/ESRO satellite, first European Space Agency satellite. Launch time 0147:59 GMT. Argument of perigee 344.7 deg. Also registered by the United States in A/AC.105/INF.331 as 1975-72A, category B satellite with orbit 2203.9 min, 442 x 99002 km x 9 0.3 deg.


1975 August 11 - . 16:51 GMT - . Launch Site: Wallops Island. Launch Vehicle: Super Loki.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 54 km (33 mi).

1975 August 12 - . Launch Site: Baikonur. Launch Complex: Baikonur LC173. Launch Vehicle: MR-UR-100.
  • State trials missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 August 12 - . Launch Site: Baikonur. Launch Complex: Baikonur LC177. Launch Vehicle: MR-UR-100.
  • State trials missile test - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 August 13 - . 07:21 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 754 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-08-26 . USAF Sat Cat: 8069 . COSPAR: 1975-073A. Apogee: 326 km (202 mi). Perigee: 204 km (126 mi). Inclination: 71.4000 deg. Period: 89.80 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 August 14 - . 13:29 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 755 - . Mass: 810 kg (1,780 lb). Nation: Russia. Agency: MO. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: KAUR-1. Spacecraft: Parus. USAF Sat Cat: 8072 . COSPAR: 1975-074A. Apogee: 1,008 km (626 mi). Perigee: 966 km (600 mi). Inclination: 82.9000 deg. Period: 104.80 min. Military navigation satellite..

1975 August 15 - . 04:25 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF04. LV Family: Minuteman. Launch Vehicle: Minuteman 2.
  • FOT GT122M-1 Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 August 15 - . 05:21 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg PLC-C. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • ESCAPE I (Sphere) Aeronomy mission - . Nation: USA. Agency: AFSC. Apogee: 272 km (169 mi).

1975 August 16 - . Launch Site: Baikonur. Launch Complex: Baikonur LC106. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 August 16 - . 07:40 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • X-ray astronomy mission - . Nation: USA. Agency: NASA. Apogee: 172 km (106 mi).

1975 August 17 - . 06:00 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima T. Launch Vehicle: TT-210.
  • Test mission - . Nation: Japan. Agency: NASDA. Apogee: 100 km (60 mi).

1975 August 18 - . 12:45 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC36. LV Family: Minuteman. Launch Vehicle: Aries.
  • IMS Prototype test - . Nation: USA. Agency: NASA. Apogee: 417 km (259 mi).

1975 August 19 - . 15:00 GMT - . Launch Site: Thumba. Launch Vehicle: M-100.
  • ISRO 8.209? - . Nation: Russia. Apogee: 87 km (54 mi).

1975 August 20 - .
  • X-24 Flight 56 - . Crew: Love, Michael. Payload: X-24B flight 28. Nation: USA. Related Persons: Love, Michael. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1625 kph. Maximum Altitude - 21950 m. Flight Time - 420 sec..

1975 August 20 - . 21:22 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan IIIE.
  • Viking 1 Orbiter - . Payload: Viking 1. Mass: 3,399 kg (7,493 lb). Nation: USA. Agency: JPL. Class: Mars. Type: Mars probe. Spacecraft: Viking. USAF Sat Cat: 8108 . COSPAR: 1975-075A.

    A Titan HIE carrying a Viking payload was successfully launched from LC-41, Eastern Test Range. This was the first flight of a new oxydizer accumulator developed for the HIE. Combined Mars orbiter and lander mission; orbiter inserted in Mars orbit 6/19/76; lander soft landed on Martian surface 7/20/76Mars. Mars Orbit. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

  • Viking 1 Lander - . Payload: Viking 1. Nation: USA. Agency: NASA Langley. Class: Mars. Type: Mars probe. Spacecraft: Viking. Decay Date: 1976-07-20 . USAF Sat Cat: 9024 . COSPAR: 1975-075C.

    A Titan HIE carrying a Viking payload was successfully launched from LC-41, Eastern Test Range. This was the first flight of a new oxydizer accumulator developed for the HIE. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).


1975 August 21 - . 15:23 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 62 km (38 mi).

1975 August 22 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 634. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-13? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 22 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 634. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-13? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 22 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 634. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-13? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 22 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF06. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • SFT-103 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 August 22 - . 02:11 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
  • Cosmos 756 - . Payload: Tselina-D no. 8. Mass: 2,500 kg (5,500 lb). Nation: Russia. Agency: MOM. Program: Tselina. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Tselina-D. Decay Date: 1992-11-05 . USAF Sat Cat: 8127 . COSPAR: 1975-076A. Apogee: 403 km (250 mi). Perigee: 394 km (244 mi). Inclination: 81.2000 deg. Period: 92.50 min.

1975 August 25 - .
  • Shuttle Enterprise final assembly. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise. Start final assembly and closeout system installation, Enterprise (OV-101).

1975 August 26 - . Launch Site: Baikonur. Launch Complex: Baikonur LC109. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Missile accuracy test launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 August 26 - . 10:40 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 9M.
  • Ionosphere mission - . Nation: Japan. Agency: ISAS. Apogee: 351 km (218 mi).

1975 August 26 - . 18:50 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 180 km (110 mi).

1975 August 27 - . Launch Site: Baikonur. Launch Complex: Baikonur LC105. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 August 27 - . Launch Site: Tonopah. Launch Vehicle: Honest John.
  • Test mission - . Nation: USA. Agency: Sandia. Apogee: 10 km (6 mi).

1975 August 27 - . Launch Site: Nizhniy Tagil. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 August 27 - . Launch Site: Nizhniy Tagil. LV Family: R-16. Launch Vehicle: R-16U.
  • Nation: Russia. Agency: RVSN. Apogee: 1,210 km (750 mi).

1975 August 27 - . 01:41 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 2914.
  • Symphonie 2 - . Payload: Symphonie MV2. Mass: 398 kg (877 lb). Nation: France. Agency: CNES, DFVLR. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 100. Completed Operations Date: 1985-01-01 . USAF Sat Cat: 8132 . COSPAR: 1975-077A. Apogee: 35,873 km (22,290 mi). Perigee: 35,866 km (22,286 mi). Inclination: 12.7000 deg. Period: 1,440.40 min.

    Jointly registered by the Federal Republic of Germany (A/AC.105/INF.329) and France (A/AC.105/INF.330). Symphonie flying model no II. Experimental telecommunications satellite. Orbit: geostationary. Also registered by the United Stat es in A/AC.105/INF.331 as 1975-77A, category C, with orbit 1427.4 min, 35364 x 35870 km x 0.0 deg Positioned in geosynchronous orbit over the Atlantic Ocean at 11 deg W in 1975-1985 As of 1 September 2001 located at 164.06 deg W drifting at 1.071 deg W per day. As of 2007 Mar 8 located at 167.97E drifting at 1.046W degrees per day.


1975 August 27 - . 14:45 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 757 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-09-09 . USAF Sat Cat: 8147 . COSPAR: 1975-078A. Apogee: 316 km (196 mi). Perigee: 182 km (113 mi). Inclination: 62.8000 deg. Period: 89.50 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 August 28 - . 11:10 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 64 km (39 mi).

1975 August 29 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF08. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • FOT GT49GM Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 August 29 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 645. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-14? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 29 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 645. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-14? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 30 - . 04:10 GMT - . Launch Site: Kagoshima. Launch Vehicle: S-310.
  • Ionosphere mission - . Nation: Japan. Agency: ISAS. Apogee: 191 km (118 mi).

1975 September 1 - . Launch Site: Fort Churchill. Launch Vehicle: Super Loki.
  • Meteorological mission - . Nation: USA. Agency: MRN. Apogee: 75 km (46 mi).

1975 September 2 - . 05:40 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. LV Family: R-5. Launch Vehicle: R-5V.
  • Vertikal-3 Solar Ultraviolet/Solar X-ray mission - . Nation: Russia. Agency: AN. Apogee: 502 km (311 mi).

1975 September 2 - . 12:00 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 9M.
  • Ionosphere mission - . Nation: Japan. Agency: ISAS. Apogee: 311 km (193 mi).

1975 September 2 - . 13:09 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 1-31 - . Payload: Molniya-1. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-1. Decay Date: 1985-11-19 . USAF Sat Cat: 8187 . COSPAR: 1975-079A. Apogee: 40,598 km (25,226 mi). Perigee: 633 km (393 mi). Inclination: 62.9000 deg. Period: 735.60 min. Uncertain if Molniya-1T model was Molniya-1 or Molniya-1T. Operation of the long-range telephone and telegraph radiocommunications system in the USSR; transmission of television programmes to stations in the Orbita network..

1975 September 3 - . 10:30 GMT - . Launch Site: Tonopah. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • LRL ACS-1D X-ray astronomy mission - . Nation: USA. Agency: Sandia. Apogee: 270 km (160 mi).

1975 September 4 - . LV Family: Shuttle, Titan. Launch Vehicle: Titan 34D, Shuttle.
  • Dr. Walter LaBerge, Assistance Secretary of the Air Force for Research and Development, announced an Interim Upper Stage to be developed for use with the Space Transportation System. - .

1975 September 4 - . 16:35 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Plasma mission - . Nation: Russia. Apogee: 170 km (100 mi).

1975 September 5 - .
  • Enterprise aft fuselage complete. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise. Aft fuselage on dock, Palmdale, Enterprise (OV-101).

1975 September 5 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100K. FAILURE: Failure.
  • Operational missile test - . Nation: Russia. Agency: RVSN. Apogee: 0 km (0 mi).

1975 September 5 - . 04:25 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF05. LV Family: Minuteman. Launch Vehicle: Minuteman 2.
  • ERCS GIANT MOON 7 Communications mission - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 September 5 - . 14:50 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 758 - . Payload: Yantar-2K s/n 3. Mass: 6,600 kg (14,500 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Yantar. Spacecraft: Yantar-2K. Duration: 1.00 days. Decay Date: 1975-09-25 . USAF Sat Cat: 8191 . COSPAR: 1975-080A. Apogee: 326 km (202 mi). Perigee: 174 km (108 mi). Inclination: 67.1000 deg. Period: 89.50 min.

    Third Yantar-2K second generation reconnaissance flight, the first with the new Kondor attitude control system. This system experienced problems and failed on the second day of flight. The spacecraft's destruct package was activated by ground command and the spacecraft was destroyed on 6 September 1975 in its second day of flight.


1975 September 6 - . 00:30 GMT - . Launch Site: Kwajalein. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 76 km (47 mi).

1975 September 8 - . Launch Site: South Uist. Launch Vehicle: Petrel.
  • Atomic oxygen Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 141 km (87 mi).

1975 September 9 - .
  • X-24 Flight 57 - . Crew: Dana. Payload: X-24B flight 29. Nation: USA. Related Persons: Dana. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 1593 kph. Maximum Altitude - 21640 m. Flight Time - 435 sec..

1975 September 9 - . Launch Site: South Uist. Launch Vehicle: Petrel.
  • Airglow Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 130 km (80 mi).

1975 September 9 - . Launch Site: South Uist. Launch Vehicle: Petrel.
  • Electron density Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 129 km (80 mi).

1975 September 9 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-80 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 September 9 - . 00:19 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 2-14 - . Payload: Molniya-2. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-2. USAF Sat Cat: 8195 . COSPAR: 1975-081A. Apogee: 38,534 km (23,943 mi). Perigee: 1,840 km (1,140 mi). Inclination: 64.0000 deg. Period: 718.20 min.

    Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).


1975 September 9 - . 05:30 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: N-1.
  • Kiku 1 - . Payload: ETS 1 (JETS). Mass: 85 kg (187 lb). Nation: Japan. Agency: NASDA. Class: Technology. Type: Navigation technology satellite. Spacecraft: ETS. USAF Sat Cat: 8197 . COSPAR: 1975-082A. Apogee: 1,103 km (685 mi). Perigee: 975 km (605 mi). Inclination: 47.0000 deg. Period: 106.00 min.

    JETS-1 (Japanese Engineering Test Satellite -1, national name 'Kiku') is intended for preliminary experiments for confirmation of the launching technologies, acquiring the satellite tracking and control technologies, and for extension tests of the extenda ble antennas, measurement of satellite environment, measurement of satellite attitudes, etc. Launch time 0530 GMT.


1975 September 9 - . 18:39 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan IIIE.
  • Viking 2 Orbiter - . Mass: 3,399 kg (7,493 lb). Nation: USA. Agency: JPL. Class: Mars. Type: Mars probe. Spacecraft: Viking. USAF Sat Cat: 8199 . COSPAR: 1975-083A.

    A Titan HIE carrying a Viking payload was successfully launched from LC-41, Eastern Test Range. This was the first flight of a new Command Receiver Set. A fire occurred at the launch site following launch and caused $2 million damage to the Aerospace Ground Equipment building. Combined Mars orbiter and lander mission; orbiter inserted in Mars orbit 8/7/76; lander soft landed on Martian surface 9/3/76Mars. Mars Orbit. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

  • Viking 2 Lander - . Nation: USA. Agency: NASA Langley. Class: Mars. Type: Mars probe. Spacecraft: Viking. Decay Date: 1976-08-31 . USAF Sat Cat: 9408 . COSPAR: 1975-083C.

    A Titan HIE carrying a Viking payload was successfully launched from LC-41, Eastern Test Range. This was the first flight of a new Command Receiver Set. A fire occurred at the launch site following launch and caused $2 million damage to the Aerospace Ground Equipment building. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).


1975 September 9 - . 19:32 GMT - . Launch Site: Wallops Island. LV Family: Hawk. Launch Vehicle: Nike Hawk.
  • Test / aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 162 km (100 mi).

1975 September 10 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF06. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • SFT-104 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 September 11 - . 20:40 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Plasma mission - . Nation: Russia. Apogee: 159 km (98 mi).

1975 September 12 - . 05:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 759 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MT. Duration: 11.00 days. Decay Date: 1975-09-23 . USAF Sat Cat: 8275 . COSPAR: 1975-084A. Apogee: 276 km (171 mi). Perigee: 231 km (143 mi). Inclination: 62.8000 deg. Period: 89.60 min. Military topography satellite; returned film capsule; separated science capsule..

1975 September 15 - . 11:04 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 64 km (39 mi).

1975 September 16 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF07. LV Family: Minuteman. Launch Vehicle: Minuteman 2.
  • FOT GT123M-1 Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 September 16 - . 09:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 760 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 14.00 days. Decay Date: 1975-09-30 . USAF Sat Cat: 8281 . COSPAR: 1975-085A. Apogee: 335 km (208 mi). Perigee: 174 km (108 mi). Inclination: 65.0000 deg. Period: 89.60 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 September 17 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-81 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 September 17 - . 07:10 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 761 - . Payload: Strela-1M no. 97. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8285 . COSPAR: 1975-086A. Apogee: 1,482 km (920 mi). Perigee: 1,400 km (800 mi). Inclination: 74.0000 deg. Period: 114.70 min.
  • Cosmos 768 - . Payload: Strela-1M no. 104. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8292 . COSPAR: 1975-086H. Apogee: 1,491 km (926 mi). Perigee: 1,471 km (914 mi). Inclination: 74.0000 deg. Period: 115.60 min.
  • Cosmos 765 - . Payload: Strela-1M no. 101. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8289 . COSPAR: 1975-086E. Apogee: 1,550 km (960 mi). Perigee: 1,478 km (918 mi). Inclination: 74.0000 deg. Period: 116.30 min.
  • Cosmos 764 - . Payload: Strela-1M no. 100. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8288 . COSPAR: 1975-086D. Apogee: 1,526 km (948 mi). Perigee: 1,479 km (919 mi). Inclination: 74.0000 deg. Period: 116.00 min.
  • Cosmos 762 - . Payload: Strela-1M no. 98. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8286 . COSPAR: 1975-086B. Apogee: 1,485 km (922 mi). Perigee: 1,438 km (893 mi). Inclination: 74.0000 deg. Period: 115.10 min.
  • Cosmos 767 - . Payload: Strela-1M no. 103. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8291 . COSPAR: 1975-086G. Apogee: 1,487 km (923 mi). Perigee: 1,455 km (904 mi). Inclination: 74.0000 deg. Period: 115.40 min.
  • Cosmos 766 - . Payload: Strela-1M no. 102. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8290 . COSPAR: 1975-086F. Apogee: 1,484 km (922 mi). Perigee: 1,418 km (881 mi). Inclination: 74.0000 deg. Period: 114.90 min.
  • Cosmos 763 - . Payload: Strela-1M no. 99. Mass: 40 kg (88 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: Strela. Spacecraft: Strela-1M. USAF Sat Cat: 8287 . COSPAR: 1975-086C. Apogee: 1,510 km (930 mi). Perigee: 1,474 km (915 mi). Inclination: 74.0000 deg. Period: 115.80 min.

1975 September 18 - . 00:12 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
  • Meteor 1-22 - . Payload: Meteor M no. 22. Mass: 3,800 kg (8,300 lb). Nation: Russia. Agency: MOM. Class: Earth. Type: Weather satellite. Spacecraft Bus: Meteor. Spacecraft: Meteor M 11F614. USAF Sat Cat: 8293 . COSPAR: 1975-087A. Apogee: 909 km (564 mi). Perigee: 800 km (490 mi). Inclination: 81.3000 deg. Period: 102.00 min. Acquisition of meteorological information needed for use by the weather service. .

1975 September 18 - . 19:47 GMT - . Launch Site: White Sands. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • NMS Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 128 km (79 mi).

1975 September 19 - . Launch Site: Johnston Island. Launch Complex: Johnston Island LE2. LV Family: Thor. Launch Vehicle: Thor DSV-2J.
  • DG-5 - . Nation: USA. Agency: USAF. Apogee: 500 km (310 mi).

1975 September 19 - . 05:15 GMT - . Launch Site: White Sands. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • NMS Aeronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 128 km (79 mi).

1975 September 20 - . 18:37 GMT - . Launch Site: White Sands. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 64 km (39 mi).

1975 September 21 - .
  • Franco-Soviet space cooperation approved. - . Nation: Russia. Decree 'On USSR-France co-operation In space' was issued..

1975 September 22 - . 08:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 81 km (50 mi).

1975 September 23 - .
  • X-24 Flight 58 - . Crew: Dana. Payload: X-24B flight 30. Nation: USA. Related Persons: Dana. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Last rocket-powered flight. Maximum Speed - 1255 kph. Maximum Altitude - 17680 m. Flight Time - 438 sec..

1975 September 23 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF04. LV Family: Minuteman. Launch Vehicle: Minuteman 2.
  • OSL - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 September 23 - . 10:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 769 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-10-05 . USAF Sat Cat: 8322 . COSPAR: 1975-088A. Apogee: 307 km (190 mi). Perigee: 203 km (126 mi). Inclination: 72.8000 deg. Period: 89.60 min. Area survey photo reconnaissance satellite; returned film capsule. Third successful test of SpK small film return capsule planned for Yantar. SpK capsule FEU-170-13 No. 5L successfully recovered..
  • Cosmos 769 Nauka - . Payload: FEU-170-13 s/n 5L. Nation: Russia. Agency: RVSN. Class: Earth. Type: Magnetosphere satellite. Spacecraft: Nauka. COSPAR: 1975-088xx.

1975 September 23 - . 10:02 GMT - . Launch Site: Tonopah. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • LRL ACS-1E X-ray astronomy mission - . Nation: USA. Agency: Sandia. Apogee: 270 km (160 mi).

1975 September 23 - . 12:00 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 9M.
  • Soft X-ray X-ray astronomy mission - . Nation: Japan. Agency: ISAS. Apogee: 336 km (208 mi).

1975 September 24 - . 05:00 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 10.
  • X-ray astronomy / solar ultraviolet mission - . Nation: Japan. Agency: ISAS. Apogee: 196 km (121 mi).

1975 September 24 - . 12:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 770 - . Mass: 650 kg (1,430 lb). Nation: Russia. Agency: MO. Spacecraft Bus: KAUR-1. Spacecraft: Sfera. USAF Sat Cat: 8325 . COSPAR: 1975-089A. Apogee: 1,208 km (750 mi). Perigee: 1,165 km (723 mi). Inclination: 83.0000 deg. Period: 109.10 min. Investigation of the upper atmosphere and outer space. .

1975 September 24 - . 21:27 GMT - . Launch Site: Wallops Island. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Plasma mission - . Nation: USA. Agency: NASA. Apogee: 273 km (169 mi).

1975 September 24 - . 23:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 623. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 September 25 - . 09:50 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/4. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 771 - . Payload: Zenit-4MKT no. 1. Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Program: Resurs. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MKT. Duration: 13.00 days. Decay Date: 1975-10-08 . USAF Sat Cat: 8327 . COSPAR: 1975-090A. Apogee: 219 km (136 mi). Perigee: 203 km (126 mi). Inclination: 81.3000 deg. Period: 88.70 min. Investigation of the natural resources of the earth in the interests of various branches of the national economy of the USSR and international cooperation..

1975 September 26 - . 00:17 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36B. LV Family: Atlas. Launch Vehicle: Atlas SLV-3D Centaur.
  • Intelsat 4A F-1 - . Mass: 1,500 kg (3,300 lb). Nation: International. Agency: Intelsat. Program: Intelsat. Class: Communications. Type: Civilian communications satellite. Spacecraft Bus: HS 312 / HS 351 / HS 353. Spacecraft: Intelsat 4A. Completed Operations Date: 1986-07-24 . USAF Sat Cat: 8330 . COSPAR: 1975-091A. Apogee: 35,910 km (22,310 mi). Perigee: 35,860 km (22,280 mi). Inclination: 8.9000 deg. Period: 1,441.10 min.

    Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit Positioned in geosynchronous orbit over the Atlantic Ocean at 25 deg W in 1975-1981; over the Atlantic Ocean 18.5 deg W in 1982-1983; over the Atlantic Ocean 30 deg W in 1983-1986 As of 30 August 2001 located at 4.05 deg E drifting at 1.213 deg W per day. As of 2007 Mar 10 located at 28.51E drifting at 1.239W degrees per day.


1975 September 27 - . 08:37 GMT - . Launch Site: Kourou. Launch Complex: Kourou Diamant. LV Family: Diamant. Launch Vehicle: Diamant BP.4.
  • Aura - . Payload: D-2. Mass: 115 kg (253 lb). Nation: France. Agency: CNES. Class: Earth. Type: Geodetic satellite. Spacecraft: D. Decay Date: 1982-09-30 . USAF Sat Cat: 8332 . COSPAR: 1975-092A. Apogee: 697 km (433 mi). Perigee: 476 km (295 mi). Inclination: 37.1000 deg. Period: 96.50 min.

    Solar UV radiation experiments. Study of solar and stellar ultraviolet radiation. 1. Spectral analysis of small and large sources located close to the plane of the ecliptic. Responsible organization: Laboratoire d'Astronomie Spatiale, Traverse du Siphon, 13000- Marseille (France). 2. St udy of solar ultraviolet radiation and its absorption by the earth's atmosphere. Responsible organization: Laboratoire de Physique Stellaire et Planetaire, Meudon, France. Weight 106.6 kg.


1975 September 29 - .
  • Birth of Nataliya Valerievna Gromushkina - . Nation: Russia. Related Persons: Gromushkina. Russian actor cosmonaut, 1998-2001. Actress, selected to appear in a film to be filmed aboard the Mir space station. Accomplished some training, but the project was cancelled..

1975 September 29 - . Launch Site: Baikonur. Launch Complex: Baikonur LC103. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • Joint flight trials launch - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 September 29 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-82 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 September 29 - . 04:15 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 772 - . Payload: Soyuz 7K-S s/n 2L. Mass: 6,750 kg (14,880 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-S. Duration: 3.99 days. Decay Date: 1975-10-02 . USAF Sat Cat: 8338 . COSPAR: 1975-093A. Apogee: 245 km (152 mi). Perigee: 154 km (95 mi). Inclination: 51.8000 deg. Period: 88.40 min.

    Unmanned military Soyuz 7K-S test flight. Recovered October 3, 1975 4:10 GMT. Unsuccessful mission. Transmitted only on 166 MHz frequency, at none of the other usual Soyuz wavelengths.
    Maneuver Summary:
    193 km X 270 km orbit to 195 km X 300 km orbit. Delta V: 8 m/s
    196 km X 300 km orbit to 196 km X 328 km orbit. Delta V: 8 m/s
    Total Delta V: 16 m/s


1975 September 30 - .
  • Charles Kowal's Discovery of Jupiter Moon Themisto - . Nation: USA.

1975 September 30 - . Launch Site: Marambio. LV Family: Rigel. Launch Vehicle: Castor (A).
1975 September 30 - . 10:02 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF03. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • SFT-05 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 September 30 - . 18:38 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 773 - . Mass: 750 kg (1,650 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: KAUR-1. Spacecraft: Strela-2M. USAF Sat Cat: 8343 . COSPAR: 1975-094A. Apogee: 790 km (490 mi). Perigee: 772 km (479 mi). Inclination: 74.1000 deg. Period: 100.50 min.

1975 October 1 - . LV Family: R-36. Launch Vehicle: Tsiklon-2.
  • US-A and Tsiklon-2 accepted into military service. - . Nation: Russia. Spacecraft Bus: Kosmoplan. Spacecraft: US-A. Central Committee of the Communist Party and Council of Soviet Ministers Decree 'On adoption of US-A with Tsiklon-2 into armaments' was issued..

1975 Oct - .
  • Colonel B.W. Parkinson, Director of the Global Positioning System program, presented a paper on his program to the Guidance and Control Panel of NATO's Advisory Group. - . Spacecraft: Navstar.

    The Global Positioning System was planned as a highly accurate positioning system. When the system was fully operational with its 24 satellites, it would be able to determine a 3-dimensional position within 33 feet, velocity within one-tenth of a mile per hour, and time within a millionth of a second anywhere on earth.


1975 October 1 - . Launch Site: Grand Forks AFB.
  • The integrated program began at Wing VI, Grand Forks AFB, ND with the 447th SMS. The program included silo upgrade, electromagnetic pulse protection, command data buffer. - .

1975 October 1 - . Launch Site: Baikonur. Launch Complex: Baikonur LC101. LV Family: R-36M. Launch Vehicle: R-36M 15A14.
  • SLI? - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 October 1 - . 08:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 774 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 14.00 days. Decay Date: 1975-10-15 . USAF Sat Cat: 8345 . COSPAR: 1975-095A. Apogee: 315 km (195 mi). Perigee: 204 km (126 mi). Inclination: 71.4000 deg. Period: 89.70 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 October 1 - . 15:35 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere/Chemical release/Plasma mission - . Nation: Russia. Apogee: 162 km (100 mi).

1975 October 2 - . Launch Site: White Sands. LV Family: Arcas. Launch Vehicle: Sidewinder-Arcas.
  • Ionosphere mission - . Nation: USA. Agency: DFVLR. Apogee: 90 km (55 mi).

1975 October 2 - . 09:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere/Chemical release/Plasma mission - . Nation: Russia. Apogee: 168 km (104 mi).

1975 October 2 - . 15:35 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere/Chemical release/Plasma mission - . Nation: Russia. Apogee: 164 km (101 mi).

1975 October 2 - . 21:05 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere/Chemical release/Plasma mission - . Nation: Russia. Apogee: 160 km (90 mi).

1975 October 3 - . Launch Site: Marambio. LV Family: Rigel. Launch Vehicle: Castor (A).
1975 October 3 - . 03:15 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 200A.
  • X-ray astronomy mission - . Nation: USA. Agency: NASA. Apogee: 212 km (131 mi).

1975 October 4 - . 01:18 GMT - . Launch Site: Kwajalein. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 76 km (47 mi).

1975 October 5 - . 18:00 GMT - . Launch Site: White Sands. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 64 km (39 mi).

1975 October 6 - . 09:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Thor. Launch Vehicle: Delta 2910.
  • Explorer 54 - . Payload: AE D. Mass: 676 kg (1,490 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: AE. Decay Date: 1976-03-12 . USAF Sat Cat: 8353 . COSPAR: 1975-096A. Apogee: 3,819 km (2,373 mi). Perigee: 151 km (93 mi). Inclination: 90.1000 deg. Period: 126.80 min. Atmospheric Explorer; atmospheric research. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1975 October 7 - . 09:37 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 66 km (41 mi).

1975 October 8 - . 00:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM.
  • Cosmos 775 - . Payload: SPRN No. 1. Mass: 2,000 kg (4,400 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Early warning satellite. Spacecraft: Prognoz SPRN. Completed Operations Date: 1975-10-08 . USAF Sat Cat: 8357 . COSPAR: 1975-097A. Apogee: 35,853 km (22,277 mi). Perigee: 35,749 km (22,213 mi). Inclination: 14.9000 deg. Period: 1,436.80 min.

    First launch of a prototype for a new geosynchronous ballistic missile early warning satellite. Exploded in orbit. The next launch did not come until nine years later, so this may have been a version of the Oko elliptical orbit early warning satellite. As of 29 August 2001 located at 113.71 deg E drifting at 0.044 deg W per day. As of 2007 Mar 10 located at 54.82E drifting at 0.255W degrees per day.


1975 October 9 - .
  • X-24 Flight 59 - . Crew: Enevoldson. Payload: X-24B flight 31. Nation: USA. Related Persons: Enevoldson. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 724 kph. Maximum Altitude - 13720 m. Flight Time - 251 sec..

1975 October 9 - . 04:49 GMT - . Launch Site: El Arenosillo. LV Family: Skylark. Launch Vehicle: Skylark 6 AC.
  • DLR H-GR-68 (Astro 7) Ultraviolet astronomy mission - . Nation: Germany. Agency: DFVLR. Apogee: 254 km (157 mi).

1975 October 9 - . 10:45 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • Ultraviolet astronomy mission - . Nation: USA. Agency: NASA. Apogee: 203 km (126 mi).

1975 October 9 - . 19:15 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4W. LV Family: Titan. Launch Vehicle: Titan 24B.
  • OPS 5499 - . Payload: KH-8 no. 45 / Agena D. Mass: 3,000 kg (6,600 lb). Nation: USA. Agency: NRO, USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: WS-117. Spacecraft: KH-8. Decay Date: 1975-11-30 . USAF Sat Cat: 8360 . COSPAR: 1975-098A. Apogee: 274 km (170 mi). Perigee: 145 km (90 mi). Inclination: 96.4000 deg. Period: 88.60 min. KH-8 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1975 October 10 - . 23:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 619. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 October 12 - . 06:39 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout D-1.
  • Triad 2 - . Payload: TIP 2. Mass: 94 kg (207 lb). Nation: USA. Agency: USN. Program: Transit. Class: Navigation. Type: Navigation satellite. Spacecraft: TIP. Decay Date: 1991-05-26 . USAF Sat Cat: 8361 . COSPAR: 1975-099A. Apogee: 490 km (300 mi). Perigee: 427 km (265 mi). Inclination: 90.4000 deg. Period: 93.80 min.

    A Scout vehicle carrying a Transit Improvement Program payload was launched from SLC-5, Western Test Range. Launch was successful, but the solar panels of the satellite failed to deploy after the satellite had reached orbit. Prototype of improved Transit satellite. Tested pulsed plasma engine.


1975 October 13 - . 13:49 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 73 km (45 mi).

1975 October 14 - . 10:30 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee F.
  • Zodiacal infrared Infrared astronomy mission - . Nation: USA. Agency: USAF. Apogee: 265 km (164 mi).

1975 October 15 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 84 km (52 mi).

1975 October 16 - . 02:10 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy mission - . Nation: Russia. Apogee: 165 km (102 mi).

1975 October 16 - . 04:04 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/D-1. FAILURE: Block D stage failed.. Failed Stage: U.
  • Ye-8-5M s/n 412 - Block D stage failed. - . Payload: Ye-8-5M s/n 412. Mass: 5,300 kg (11,600 lb). Nation: Russia. Agency: RVSN. Program: Luna. Class: Moon. Type: Lunar probe. Spacecraft Bus: Luna Ye-8. Spacecraft: Luna Ye-8-5. Decay Date: 1975-10-16 . Attempted robotic lunar soil return mission. Block D stage failed..

1975 October 16 - . 16:30 GMT - . Launch Site: White Sands. LV Family: Tomahawk. Launch Vehicle: Paiute Tomahawk.
  • DCST test - . Nation: USA. Agency: USAF CRL. Apogee: 263 km (163 mi).

1975 October 16 - . 22:40 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2914.
  • GOES 1 - . Payload: GOES A. Mass: 295 kg (650 lb). Nation: USA. Agency: NOAA. Class: Earth. Type: Weather satellite. Spacecraft: GOES. Completed Operations Date: 1985-01-01 . USAF Sat Cat: 8366 . COSPAR: 1975-100A. Apogee: 35,811 km (22,251 mi). Perigee: 35,787 km (22,236 mi). Inclination: 14.8000 deg. Period: 1,436.70 min.

    Geostationary Operational Environmental Satellite. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). Positioned in geosynchronous orbit over the Atlantic Ocean at 55 deg W in 1975-1976; over the Pacific Ocean 135 deg W in 1976-1978; over the Atlantic Ocean 10 deg W in 1978; over the Indian Ocean 58 deg E in 1978-1979; over the Pacific Ocean 135 deg W in 1979-1980; over the Atlantic Ocean 93 deg W in 1980; over the Pacific Ocean 130 deg W in 1980-1985 As of 3 September 2001 located at 81.97 deg W drifting at 0.051 deg E per day. As of 2007 Mar 9 located at 81.95W drifting at 0.055W degrees per day.


1975 October 17 - . LV Family: Shuttle. Launch Vehicle: Space Shuttle.
  • Shuttle SSME first test. - . Nation: USA. Program: STS. Space shuttle main engine first main stage test at NSTL.

1975 October 17 - . 14:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 776 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-10-29 . USAF Sat Cat: 8369 . COSPAR: 1975-101A. Apogee: 288 km (178 mi). Perigee: 200 km (120 mi). Inclination: 62.8000 deg. Period: 89.40 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 776 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-11-01 . USAF Sat Cat: 8412 . COSPAR: 1975-101D. Apogee: 272 km (169 mi). Perigee: 194 km (120 mi). Inclination: 62.8000 deg. Period: 89.16 min.

1975 October 18 - . 04:45 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • X-ray astronomy mission - . Nation: USA. Agency: NASA. Apogee: 184 km (114 mi).

1975 October 20 - . 13:52 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 66 km (41 mi).

1975 October 21 - .
  • X-24 Flight 60 - . Crew: Scobee. Payload: X-24B flight 32. Nation: USA. Related Persons: Scobee. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 743 kph. Maximum Altitude - 13720 m. Flight Time - 255 sec..

1975 October 21 - . 11:42 GMT - . Launch Site: El Arenosillo. Launch Vehicle: INTA-300.
  • Aeronomy / test - . Nation: Germany. Agency: INTA. Apogee: 240 km (140 mi). Failed to reach expected altitude..

1975 October 22 - .
  • Venera 9, Venus Landing (Soviet Venus Orbiter/Lander) - . Nation: Russia. Spacecraft Bus: 4MV. Spacecraft: Venera 4V-1.

1975 October 23 - . Launch Site: Salto di Quirra. Launch Vehicle: Alfa.
  • Nation: Italy. Apogee: 100 km (60 mi).

1975 October 24 - . 16:19 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 72 km (44 mi).

1975 October 25 - .
1975 October 25 - . Launch Site: Baikonur. Launch Complex: Baikonur LC90/19. Launch Pad: LC90?/pad?. LV Family: R-36. Launch Vehicle: R-36 8K67.
  • Operational test? - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 October 27 - . 15:30 GMT - . Launch Site: Thule AFB. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, AN/DMQ-9- - . Nation: USA. Agency: MRN. Apogee: 69 km (42 mi).

1975 October 28 - . 09:44 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 59 km (36 mi).

1975 October 29 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-83 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 October 29 - . 02:39 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170A.
  • Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 186 km (115 mi).

1975 October 29 - . 11:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC90/19. Launch Pad: LC90/pad?. LV Family: R-36. Launch Vehicle: Tsiklon-2.
  • Cosmos 777 - . Mass: 3,000 kg (6,600 lb). Nation: Russia. Agency: MO. Program: EORSAT. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft Bus: Kosmoplan. Spacecraft: US-P. Decay Date: 1976-06-03 . USAF Sat Cat: 8416 . COSPAR: 1975-102A. Apogee: 442 km (274 mi). Perigee: 425 km (264 mi). Inclination: 65.0000 deg. Period: 93.30 min. Ocean monitoring; exploded 1/76..

1975 October 29 - . 14:28 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere/Chemical release/Plasma mission - . Nation: Russia. Apogee: 164 km (101 mi).

1975 October 30 - . 23:52 GMT - . Launch Site: Poker Flat. Launch Vehicle: Sergeant.
  • PF-SGT-101 test - . Nation: USA. Agency: DNA. Apogee: 100 km (60 mi).

1975 October 31 - .
  • Enterprise lower fuselage complete. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise. Lower forward fuselage on dock, Palmdale, Enterprise (OV-101).

1975 October 31 - . 11:17 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
  • Aeronomy/Ionosphere mission - . Nation: Russia. Apogee: 152 km (94 mi).

1975 November 1 - .
  • Death of Detlev W Bronk at New York, New York, NY. - . Nation: USA. Related Persons: Bronk. American scientist, president of the National Academy of Sciences, 1950-1962, and a member of the National Aeronautics and Space Council. President of Johns Hopkins University, 1949-1953, and Rockefeller University, 1953-1968..

1975 Nov - .
  • The development program for a large, advanced ballistic reentry vehicle was cancelled. - . Related Persons: ABRES.

1975 Nov - .
  • SAMSO/YE briefed Canadian military research and development personnel on the Global Positioning System. - . Spacecraft: Navstar.

1975 November 1 - . Launch Pad: Atlantic Ocean, 60.0 N x 30.0 W. Launch Platform: ZUB. Launch Vehicle: MR-12.
  • Nation: Russia. Apogee: 150 km (90 mi).

1975 November 3 - .
  • X-24 Flight 61 - . Crew: McMurtry. Payload: X-24B flight 33. Nation: USA. Related Persons: McMurtry. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 734 kph. Maximum Altitude - 13720 m. Flight Time - 248 sec..

1975 November 4 - . 10:13 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 778 - . Mass: 810 kg (1,780 lb). Nation: Russia. Agency: MO. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: KAUR-1. Spacecraft: Parus. USAF Sat Cat: 8419 . COSPAR: 1975-103A. Apogee: 1,001 km (621 mi). Perigee: 968 km (601 mi). Inclination: 83.0000 deg. Period: 104.80 min. Military navigation satellite..

1975 November 4 - . 15:20 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 779 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 14.00 days. Decay Date: 1975-11-18 . USAF Sat Cat: 8420 . COSPAR: 1975-104A. Apogee: 341 km (211 mi). Perigee: 182 km (113 mi). Inclination: 62.8000 deg. Period: 89.70 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 November 5 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 89 km (55 mi).

1975 November 6 - . Launch Site: Johnston Island. Launch Complex: Johnston Island LE2. LV Family: Thor. Launch Vehicle: Thor DSV-2J.
  • DG-3 - . Nation: USA. Agency: USAF. Apogee: 500 km (310 mi).

1975 November 6 - . 19:08 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 HAD. LV Family: Lupus. Launch Vehicle: Cockatoo.
  • Li release - . Nation: Australia. Agency: WRE. Apogee: 150 km (90 mi).

1975 November 7 - . 14:45 GMT - . Launch Site: Antigua. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 75 km (46 mi).

1975 November 8 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 635. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-15? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 November 8 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 635. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-15? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 November 8 - . 05:20 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • X-ray astronomy mission - . Nation: USA. Agency: NASA. Apogee: 177 km (109 mi).

1975 November 10 - . 12:53 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 67 km (41 mi).

1975 November 11 - .
  • Birth of Gregory Reid Wiseman - . Nation: USA. Related Persons: Wiseman. American test pilot astronaut, 2009-on..

1975 November 11 - . 15:00 GMT - . Launch Site: Thumba. Launch Vehicle: M-100.
  • ISRO 8.221? - . Nation: Russia. Apogee: 85 km (52 mi).

1975 November 12 - .
  • X-24 Flight 62 - . Crew: Enevoldson. Payload: X-24B flight 34. Nation: USA. Related Persons: Enevoldson. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 734 kph. Maximum Altitude - 13720 m. Flight Time - 241 sec..

1975 November 13 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF03. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
  • SFT-16 re-entry vehicle test flight - . Nation: USA. Agency: USAF AFSC. Apogee: 1,300 km (800 mi).

1975 November 13 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 642. LV Family: Polaris. Launch Vehicle: Poseidon C3.
  • FOT-16? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 November 14 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF08. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • FOT GT50GM Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 November 14 - . 19:14 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 3-03 - . Payload: Molniya-3 s/n 13. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-3. USAF Sat Cat: 8425 . COSPAR: 1975-105A. Apogee: 38,527 km (23,939 mi). Perigee: 1,823 km (1,132 mi). Inclination: 63.9000 deg. Period: 717.70 min.

    Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).


1975 November 17 - .
  • Columbia crew module started. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Columbia. Start long-lead fabrication of crew module, Columbia (OV-102).

1975 November 17 - . Launch Site: Whiteman AFB.
  • SATAF Detachment 31, located at Wing IV, Whiteman AFB, Missouri, was reactivated by Boeing AFPRO personnel. - .

1975 November 17 - . 14:36 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Soyuz 20 - . Payload: Soyuz 7K-T(A9) s/n 64. Mass: 6,700 kg (14,700 lb). Nation: Russia. Agency: MOM. Program: Salyut. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T/A9. Duration: 90.49 days. Decay Date: 1976-02-16 . USAF Sat Cat: 8430 . COSPAR: 1975-106A. Apogee: 251 km (155 mi). Perigee: 184 km (114 mi). Inclination: 51.6000 deg. Period: 88.80 min.

    Unmanned long duration test of the Soyuz transport vehicle; docked with Salyut 4. Recovered February 16, 1976 2:24 GMT. Comprehensive checking of improved on-board systems of the space craft under various flight conditions. Carried a biological payload. Living organisms were exposed to three months in space.


1975 November 18 - . 19:01 GMT - . Launch Site: Wallops Island. LV Family: Hydac. Launch Vehicle: Nike Javelin.
  • Test mission - . Nation: USA. Agency: NASA. Apogee: 163 km (101 mi).

1975 November 19 - .
  • X-24 Flight 63 - . Crew: Scobee. Payload: X-24B flight 35. Nation: USA. Related Persons: Scobee. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 740 kph. Maximum Altitude - 13720 m. Flight Time - 249 sec..

1975 November 19 - . 17:45 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 120 km (70 mi).

1975 November 20 - . 02:06 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2910.
  • Explorer 55 - . Payload: AE E. Mass: 721 kg (1,589 lb). Nation: USA. Agency: NASA Greenbelt. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: AE. Decay Date: 1981-06-10 . USAF Sat Cat: 8440 . COSPAR: 1975-107A. Apogee: 3,002 km (1,865 mi). Perigee: 154 km (95 mi). Inclination: 19.7000 deg. Period: 117.70 min. Atmospheric Explorer. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B). .

1975 November 21 - . 04:11 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 121 km (75 mi).

1975 November 21 - . 09:20 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 780 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-12-03 . USAF Sat Cat: 8442 . COSPAR: 1975-108A. Apogee: 278 km (172 mi). Perigee: 201 km (124 mi). Inclination: 65.0000 deg. Period: 89.30 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 780 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-12-11 . USAF Sat Cat: 8460 . COSPAR: 1975-108D. Apogee: 268 km (166 mi). Perigee: 197 km (122 mi). Inclination: 65.0000 deg. Period: 89.15 min.

1975 November 21 - . 16:37 GMT - . Launch Site: Kiruna. LV Family: Deacon. Launch Vehicle: Nike Apache.
  • SSC Range test - . Nation: Sweden. Agency: SSC. Apogee: 131 km (81 mi).

1975 November 21 - . 17:11 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 781 - . Mass: 900 kg (1,980 lb). Nation: Russia. Agency: MO. Program: Tselina. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft: Tselina-O. Decay Date: 1980-11-26 . USAF Sat Cat: 8444 . COSPAR: 1975-109A. Apogee: 563 km (349 mi). Perigee: 499 km (310 mi). Inclination: 74.0000 deg. Period: 95.20 min. Replaced Cosmos 698. Investigation of the upper atmosphere and outer space. .

1975 November 22 - . 16:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: UK S27. LV Family: Polaris. Launch Vehicle: Polaris A3.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1975 November 24 - . 15:15 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 7 AC.
  • Soft X-ray spectrometer X-ray astronomy mission - . Nation: UK. Agency: BAC. Apogee: 251 km (155 mi).

1975 November 25 - . 17:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Soyuz-U.
  • Cosmos 782 - . Payload: Bion no. 3. Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Biology. Type: Biology satellite. Spacecraft Bus: Vostok. Spacecraft: Bion. Duration: 19.50 days. Decay Date: 1975-12-15 . USAF Sat Cat: 8450 . COSPAR: 1975-110A. Apogee: 384 km (238 mi). Perigee: 218 km (135 mi). Inclination: 62.8000 deg. Period: 90.50 min.

    Biological research. Continued investigation of the effects of space flight on living organisms. Capsule recovered 52 deg 17 min N, 64 deg 11 min E. The Cosmos 782 mission marked the first time that the United States participated in the Soviet Cosmos Program. Scientists from France, Czechoslovakia, Hungary, Poland, Romania, the U.S. and the U.S.S.R. participated in these investigations. Additional Details: here....


1975 November 25 - . 23:39 GMT - . Launch Site: Cape Parry. LV Family: Black Brant. Launch Vehicle: Black Brant IVB.
  • Periquito Plasma / barium release mission - . Nation: USA. Agency: NRCC, Sandia. Apogee: 500 km (310 mi).

1975 November 26 - .
  • X-24 Flight 64 - . Crew: McMurtry. Payload: X-24B flight 36. Nation: USA. Related Persons: McMurtry. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: X-24. Spacecraft: X-24B. Maximum Speed - 740 kph. Maximum Altitude - 13720 m. Flight Time - 245 sec..

1975 November 26 - . 03:29 GMT - . Launch Site: Jiuquan. Launch Complex: Jiuquan LA2B. LV Family: CZ. Launch Vehicle: Chang Zheng 2C.
  • FSW-0 No. 1 - . Payload: FSW-0 No. 01. Mass: 2,500 kg (5,500 lb). Nation: China. Agency: MAI. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: FSW. Duration: 2.00 days. Decay Date: 1975-12-29 . USAF Sat Cat: 8452 . COSPAR: 1975-111A. Apogee: 483 km (300 mi). Perigee: 183 km (113 mi). Inclination: 63.0000 deg. Period: 91.10 min.

    First orbital test of Chinese recoverable photo surveillance satellite. The spacecraft was brought down early, after three days in orbit, due to problems with the attitude control system cold gas supply. Along the skirt of the return capsule some wires and instruments were burnt during re-entry and capsule impacted far from its planned landing point. However usable film was obtained from the capsule. The Chinese Academy of Space Technology organised a team to determine the cause, and improvements were made in the next spacecraft of the model. Additional Details: here....


1975 November 27 - . 17:25 GMT - . Launch Site: Primrose Lake. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 70 km (43 mi).

1975 November 28 - . LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • Transfer of the basic Minuteman III missile series to AFLC was completed. - .

1975 November 28 - . 00:10 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Cosmos 783 - . Mass: 750 kg (1,650 lb). Nation: Russia. Agency: MO. Program: Strela. Class: Communications. Type: Military store-dump communications satellite. Spacecraft Bus: KAUR-1. Spacecraft: Strela-2M. USAF Sat Cat: 8458 . COSPAR: 1975-112A. Apogee: 797 km (495 mi). Perigee: 779 km (484 mi). Inclination: 74.1000 deg. Period: 100.60 min.

1975 November 28 - . 12:28 GMT - . Launch Site: South Uist. Launch Vehicle: Petrel.
  • Electron density Ionosphere mission - . Nation: UK. Agency: SRC. Apogee: 129 km (80 mi).

1975 November 28 - . 12:56 GMT - . Launch Site: South Uist. Launch Vehicle: Petrel.
  • Atomic oxygen Atmospheric mission - . Nation: UK. Agency: SRC. Apogee: 147 km (91 mi).

1975 November 28 - . 23:39 GMT - . Launch Site: Cape Parry. LV Family: Black Brant. Launch Vehicle: Black Brant IVB.
  • Periquito Plasma / barium release mission - . Nation: USA. Agency: NRCC, Sandia. Apogee: 500 km (310 mi).

1975 November 29 - . 17:00 GMT - . Launch Site: Molodezhnaya. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 90 km (55 mi).

1975 December 1 - .
  • Enterprise upper forward fuselage complete. - . Nation: USA. Program: STS. Class: Manned. Type: Manned spaceplane. Spacecraft Bus: Shuttle. Spacecraft: Enterprise. Upper forward fuselage on dock, Palmdale, Enterprise (OV-101).

1975 Dec - . LV Family: Shuttle.
  • HQ USAF decided that the DOD would not acquire its own mission operations system for the space shuttle but would use NASA's system instead. - .

1975 Dec - . Launch Site: Plesetsk. LV Family: RT-2. Launch Vehicle: RT-2P.
  • RT2 PL75-07 - . Nation: Russia. Agency: RVSN. Apogee: 1,000 km (600 mi).

1975 December 2 - . 12:57 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Twilight D-Region Aeronomy / technology mission - . Nation: USA. Agency: USAF CRL. Apogee: 120 km (70 mi).

1975 December 2 - . 13:50 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Twilight D-Region Aeronomy / technology mission - . Nation: USA. Agency: USAF CRL. Apogee: 124 km (77 mi).

1975 December 2 - . 17:00 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Twilight D-Region Aeronomy / technology mission - . Nation: USA. Agency: USAF CRL. Apogee: 125 km (77 mi).

1975 December 3 - . Launch Site: Wallops Island. LV Family: Talos. Launch Vehicle: Tater.
  • Test mission - . Nation: USA. Agency: USAF SAMSO. Apogee: 5.00 km (3.10 mi).

1975 December 3 - . 00:35 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Twilight D-Region Aeronomy / technology mission - . Nation: USA. Agency: USAF CRL. Apogee: 125 km (77 mi).

1975 December 3 - . 00:59 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Twilight D-Region Aeronomy / technology mission - . Nation: USA. Agency: USAF CRL. Apogee: 125 km (77 mi).

1975 December 3 - . 02:00 GMT - . Launch Site: White Sands. LV Family: Astrobee. Launch Vehicle: Astrobee D.
  • Twilight D-Region Aeronomy / technology mission - . Nation: USA. Agency: USAF CRL. Apogee: 127 km (78 mi).

1975 December 3 - . 10:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 784 - . Mass: 6,000 kg (13,200 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-2M satellite. Duration: 12.00 days. Decay Date: 1975-12-15 . USAF Sat Cat: 8463 . COSPAR: 1975-113A. Apogee: 231 km (143 mi). Perigee: 215 km (133 mi). Inclination: 81.3000 deg. Period: 88.90 min. Area survey photo reconnaissance satellite; returned film capsule; separated science capsule..
  • Nauka Cosmos 784 - . Payload: Nauka. Nation: Russia. Agency: MOM. Spacecraft: Nauka. Decay Date: 1975-12-21 . USAF Sat Cat: 8485 . COSPAR: 1975-113G. Apogee: 217 km (134 mi). Perigee: 204 km (126 mi). Inclination: 81.3000 deg. Period: 88.71 min.

1975 December 3 - . 16:57 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 122 km (75 mi).

1975 December 4 - . Launch Site: Vandenberg. Launch Complex: Vandenberg 395-C. LV Family: Titan. Launch Vehicle: Titan II.
  • DG-4 - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 December 4 - . Launch Site: Kwajalein. Launch Complex: Kwajalein RN. LV Family: Sergeant. Launch Vehicle: Castor.
  • Technology mission - . Nation: USA. Agency: USAF. Apogee: 200 km (120 mi).

1975 December 4 - . Launch Site: Fort Churchill. LV Family: Black Brant. Launch Vehicle: Black Brant 8B.
  • Test mission - . Nation: Canada. Agency: Bristol. Apogee: 340 km (210 mi).

1975 December 4 - . 03:22 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 350.
  • Infrared astronomy mission - . Nation: USA. Agency: USAF CRL. Apogee: 286 km (177 mi).

1975 December 4 - . 05:25 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun.
  • Aeronomy mission - . Nation: USA. Agency: NASA. Apogee: 120 km (70 mi).

1975 December 4 - . 13:52 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. LV Family: Lupus. Launch Vehicle: Corella.
  • Aeronomy mission - . Nation: Australia. Agency: WRE. Apogee: 220 km (130 mi).

1975 December 4 - . 20:38 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4E. LV Family: Titan. Launch Vehicle: Titan IIID.
  • KH-9 no. 11 - . Mass: 13,300 kg (29,300 lb). Nation: USA. Agency: CIA, NRO. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-9. Decay Date: 1976-04-01 . USAF Sat Cat: 8467 . COSPAR: 1975-114A. Apogee: 234 km (145 mi). Perigee: 157 km (97 mi). Inclination: 96.3000 deg. Period: 88.40 min. KH-9 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .
  • KH 9-11 Subsatellite - . Payload: SSF 9 / OPS 5547. Mass: 60 kg (132 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Naval signals intelligence satellite. Spacecraft Bus: P 11. Spacecraft: SSF. Decay Date: 1978-05-01 . USAF Sat Cat: 8468 . COSPAR: 1975-114B. Apogee: 1,558 km (968 mi). Perigee: 236 km (146 mi). Inclination: 96.3000 deg. Period: 103.00 min. Not identified as a subsatellite ferret by McDowell..

1975 December 5 - . 15:33 GMT - . Launch Site: Ascension. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 60 km (37 mi).

1975 December 6 - . 03:35 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout F-1. FAILURE: Failure. Failed Stage: U.
  • Explorer (56) - . Payload: DAD-A. Mass: 71 kg (156 lb). Nation: USA. Agency: NASA. Program: Explorer. Class: Earth. Type: Atmosphere satellite. Spacecraft: DAD. Decay Date: 1975-12-05 . Dual Air Density; air density experiments..
  • DAD-B - . Payload: DAD-B. Mass: 71 kg (156 lb). Nation: USA. Agency: AFSC. Program: Explorer. Spacecraft: DAD.

1975 December 6 - . 06:05 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 350.
  • X-ray astronomy mission - . Nation: USA. Agency: NASA. Apogee: 221 km (137 mi).

1975 December 6 - . 07:42 GMT - . Launch Site: White Sands. LV Family: Aerobee. Launch Vehicle: Aerobee 170.
  • Astronomy mission - . Nation: USA. Agency: NASA. Apogee: 186 km (115 mi).

1975 December 8 - . 15:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 75 km (46 mi).

1975 December 9 - . 18:01 GMT - . Launch Site: Point Mugu. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 59 km (36 mi).

1975 December 10 - . 09:00 GMT - . Launch Site: Kheysa. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 88 km (54 mi).

1975 December 11 - . 16:15 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC36. LV Family: Black Brant. Launch Vehicle: Black Brant VC.
  • SPAR 1 Microgravity mission - . Nation: USA. Agency: NASA. Apogee: 206 km (128 mi).

1975 December 11 - . 17:00 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
  • Intercosmos 14 - . Payload: DS-U2-IK s/n 6. Mass: 700 kg (1,540 lb). Nation: Russia. Agency: IK. Program: DS. Class: Earth. Type: Ionosphere satellite. Spacecraft Bus: DS. Spacecraft: DS-U2-IK. Completed Operations Date: 1976-07-09 . Decay Date: 1983-02-27 . USAF Sat Cat: 8471 . COSPAR: 1975-115A. Apogee: 1,684 km (1,046 mi). Perigee: 335 km (208 mi). Inclination: 74.0000 deg. Period: 105.30 min. Study of low-frequency electromagnetic vibrations in the magnetosphere of the earth, of the structure of the ionosphere and of the intensity of micrometeorite fluxes..

1975 December 12 - . 05:09 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg PLC-C. LV Family: Tomahawk. Launch Vehicle: Ute Tomahawk.
  • ESCAPE II (Sphere) Aeronomy mission - . Nation: USA. Agency: AFSC. Apogee: 164 km (101 mi).

1975 December 12 - . 12:45 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC90/19. Launch Pad: LC90/pad?. LV Family: R-36. Launch Vehicle: Tsiklon-2.
  • Cosmos 785 - . Mass: 3,800 kg (8,300 lb). Nation: Russia. Agency: MO. Program: RORSAT. Class: Surveillance. Type: Military naval surveillance radar satellite. Spacecraft Bus: Kosmoplan. Spacecraft: US-A. Decay Date: 1976-02-05 . USAF Sat Cat: 8480 . COSPAR: 1975-116C. Apogee: 1,004 km (623 mi). Perigee: 907 km (563 mi). Inclination: 65.1000 deg. Period: 104.20 min. Ocean surveillance; nuclear powered; failed immediately after reaching orbit..

1975 December 13 - . 01:56 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 3914.
  • Satcom 1 - . Mass: 464 kg (1,022 lb). Nation: USA. Agency: RCA Amer. Manufacturer: Lockheed. Program: Satcom. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 1000. Completed Operations Date: 1984-06-04 . USAF Sat Cat: 8476 . COSPAR: 1975-117A. Apogee: 36,076 km (22,416 mi). Perigee: 35,875 km (22,291 mi). Inclination: 12.8000 deg. Period: 1,445.80 min.

    Positioned in geosynchronous orbit over the Pacific Ocean at 135 deg W in 1976-1983; over the Americas at 119 deg W in 1983-1984; over the Pacific Ocean 139 deg W in 1984 As of 5 September 2001 located at 38.03 deg E drifting at 2.422 deg W per day. As of 2007 Mar 9 located at 137.85W drifting at 2.426W degrees per day.


1975 December 14 - . 05:15 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan IIIC.
  • IMEWS 5 - . Payload: DSP Phase 2 s/n 7 / OPS 3165. Mass: 1,040 kg (2,290 lb). Nation: USA. Agency: USAF. Class: Surveillance. Type: Early warning satellite. Spacecraft: DSP. Completed Operations Date: 1987-12-31 . USAF Sat Cat: 8482 . COSPAR: 1975-118A. Apogee: 35,785 km (22,235 mi). Perigee: 35,671 km (22,164 mi). Inclination: 3.0000 deg. Period: 1,436.00 min. Second generation geosynchronous ballistic missile launch detection satellite, remained in service for over twelve years. As of 1982 Dec 16 located at 34.61E drifting at 0.823E degrees per day..

1975 December 15 - .
  • The Critical Design Review for the Global Positioning System Stage Vehicle was held. - . Spacecraft: Navstar.

1975 December 15 - . 15:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 59 km (36 mi).

1975 December 16 - . 09:19 GMT - . Launch Site: Jiuquan. Launch Complex: Jiuquan LA2B. LV Family: CZ. Launch Vehicle: Feng Bao 1.
  • JSSW 4 - . Payload: JSSW 4. Mass: 1,110 kg (2,440 lb). Nation: China. Agency: MAI. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: JSSW. Decay Date: 1976-01-27 . USAF Sat Cat: 8488 . COSPAR: 1975-119A. Apogee: 387 km (240 mi). Perigee: 186 km (115 mi). Inclination: 69.0000 deg. Period: 90.30 min. Photo surveillance; radio transmission. .

1975 December 16 - . 09:50 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
  • Cosmos 786 - . Mass: 6,300 kg (13,800 lb). Nation: Russia. Agency: MOM. Class: Surveillance. Type: Military surveillance satellite. Spacecraft Bus: Vostok. Spacecraft: Zenit-4MK. Duration: 13.00 days. Decay Date: 1975-12-29 . USAF Sat Cat: 8489 . COSPAR: 1975-120A. Apogee: 325 km (201 mi). Perigee: 184 km (114 mi). Inclination: 65.0000 deg. Period: 89.50 min. High resolution photo reconnaissance satellite; returned film capsule; maneuverable..

1975 December 16 - . 16:00 GMT - . Launch Site: White Sands. LV Family: Tomahawk. Launch Vehicle: Nike Tomahawk.
  • Test mission - . Nation: USA. Agency: NASA. Apogee: 241 km (149 mi).

1975 December 17 - . Launch Site: Vandenberg. Launch Complex: Vandenberg LF22. LV Family: Minuteman. Launch Vehicle: Minuteman 3.
  • FOT GT51GB Follow-on Test launch - . Nation: USA. Agency: USAF SAC. Apogee: 1,300 km (800 mi).

1975 December 17 - . 11:06 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 2-15 - . Payload: Molniya-2. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-2. Decay Date: 1987-03-07 . USAF Sat Cat: 8492 . COSPAR: 1975-121A. Apogee: 24,113 km (14,983 mi). Perigee: 103 km (64 mi). Inclination: 62.8000 deg. Period: 416.90 min.

    Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).


1975 December 18 - . Launch Site: , Vandenberg. LV Family: Atlas. Launch Vehicle: Atlas F.
  • Congress approved funding for the activation of SLC-3E, Vandenberg AFB, and its conversion to an Atlas F configuration. - .

1975 December 18 - . Launch Site: Kourou. LV Family: Arcas. Launch Vehicle: Super Arcas.
  • EXAMETNET 35-84 - . Nation: France. Agency: CNES. Apogee: 75 km (46 mi).

1975 December 18 - . 15:00 GMT - . Launch Site: Thumba. Launch Vehicle: M-100.
  • ISRO 8.227? - . Nation: Russia. Apogee: 87 km (54 mi).

1975 December 19 - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC132/1. LV Family: R-14. Launch Vehicle: Kosmos 11K65M. FAILURE: Launch vehicle failed to orbit - unknown cause.. Failed Stage: U.
  • DS-P1-M - . Payload: DS-P1-M. Mass: 650 kg (1,430 lb). Nation: Russia. Agency: RVSN. Class: Military. Type: Anti-satellite system target. Spacecraft Bus: DS. Spacecraft: DS-P1-M. Apogee: 500 km (310 mi). Target for IS ASAT systems tests..

1975 December 20 - . LV Family: Shuttle. Launch Vehicle: Space Shuttle.
  • First SSME 60-second duration test, NSTL - . Nation: USA. Program: STS.

1975 December 21 - . 22:19 GMT - . Launch Site: Thule AFB. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, AN/DMQ-9- - . Nation: USA. Agency: MRN. Apogee: 58 km (36 mi).

1975 December 22 - . 02:08 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Prognoz 4 - . Payload: SO-M s/n 504. Mass: 905 kg (1,995 lb). Nation: Russia. Agency: MOM. Class: Earth. Type: Magnetosphere satellite. Spacecraft: Prognoz. Decay Date: 1977-12-31 . USAF Sat Cat: 8510 . COSPAR: 1975-122A. Apogee: 199,000 km (123,000 mi). Perigee: 634 km (393 mi). Inclination: 65.0000 deg. Period: 5,740.00 min.

    Investigation of the corpuscular and electromagnetic radiation of the sun and of solar plasma fluxes, study of the magnetic fields in circumterrestrial space in order to determine the effects of solar activity on the interplanetary medium and in the magne tosphere of the earth.


1975 December 22 - . 13:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24. LV Family: Proton. Launch Vehicle: Proton-K/DM.
  • Raduga 1 - . Payload: Raduga s/n 11L. Mass: 1,940 kg (4,270 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-3. Spacecraft: Raduga . Completed Operations Date: 1978-01-01 . USAF Sat Cat: 8513 . COSPAR: 1975-123A. Apogee: 35,807 km (22,249 mi). Perigee: 35,758 km (22,218 mi). Inclination: 13.3000 deg. Period: 1,435.90 min.

    Statsionar-1. Provision of uninterrupted round-the-clock telephone and telegraph radio-communications system in the USSR, transmission of USSR central television programmes to stations in the Orbita network and international cooperation. Positioned in geosynchronous orbit over the Indian Ocean at 85 deg E in 1975-1978? As of 27 August 2001 located at 70.55 deg E drifting at 0.084 deg W per day. As of 2007 Mar 11 located at 85.79E drifting at 0.009E degrees per day.


1975 December 23 - . 18:30 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 90 km (55 mi).

1975 December 24 - . 17:00 GMT - . Launch Site: Molodezhnaya. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 83 km (51 mi).

1975 December 25 - . 19:00 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
  • Meteor 1-23 - . Payload: Meteor M no. 23. Mass: 3,800 kg (8,300 lb). Nation: Russia. Agency: MOM. Class: Earth. Type: Weather satellite. Spacecraft Bus: Meteor. Spacecraft: Meteor M 11F614. USAF Sat Cat: 8519 . COSPAR: 1975-124A. Apogee: 868 km (539 mi). Perigee: 850 km (520 mi). Inclination: 81.2000 deg. Period: 102.10 min. Acquisition of meteorological information needed for use by the weather service. .

1975 December 26 - . 22:49 GMT - . Launch Site: Eareckson. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Starute, Datasonde - . Nation: USA. Agency: MRN. Apogee: 54 km (33 mi).

1975 December 27 - . 10:22 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC43/3. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
  • Molniya 3-04 - . Payload: Molniya-3 no. s/n 15. Mass: 1,600 kg (3,500 lb). Nation: Russia. Agency: MOM. Program: Molniya. Class: Communications. Type: Military communications satellite. Spacecraft Bus: KAUR-2. Spacecraft: Molniya-3. Decay Date: 1986-08-12 . USAF Sat Cat: 8521 . COSPAR: 1975-125A. Apogee: 40,708 km (25,294 mi). Perigee: 452 km (280 mi). Inclination: 62.8000 deg. Period: 733.80 min.

    Decay date suspect Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme).


1975 December 28 - . 09:35 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 91 km (56 mi).

1975 December 29 - . 15:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC43. LV Family: Deacon. Launch Vehicle: Rocketsonde.
  • Arcasonde - . Nation: USA. Agency: MRN. Apogee: 96 km (59 mi).

1975 December 30 - . 21:00 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: M-100.
  • Nation: Russia. Apogee: 90 km (55 mi).

1975 December 31 - .
  • Shuttle 1/4-scale model ground vibration test - . Nation: USA. Program: STS. 1/4-scale model ground vibration test facility construction starts..

1975 December 31 - . LV Family: Minuteman. Launch Vehicle: Minuteman 2.
  • The transfer of engineering responsibility to AFLC for Minuteman II, which had started in January 1968, was completed. - .


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