Encyclopedia Astronautica
SESP


American military technology satellite. 3 launches, 1971.06.08 (SESP 70-1) to 1976.07.08 (SESP 74-2). Space craft engaged in investigation of spaceflight techniques and technology.

Gross mass: 260 kg (570 lb).
First Launch: 1971.06.08.
Last Launch: 1976.07.08.
Number: 3 .

More... - Chronology...


Associated Countries
See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...
  • Titan The Titan launch vehicle family was developed by the United States Air Force to meet its medium lift requirements in the 1960's. The designs finally put into production were derived from the Titan II ICBM. Titan outlived the competing NASA Saturn I launch vehicle and the Space Shuttle for military launches. It was finally replaced by the USAF's EELV boosters, the Atlas V and Delta IV. Although conceived as a low-cost, quick-reaction system, Titan was not successful as a commercial launch vehicle. Air Force requirements growth over the years drove its costs up - the Ariane using similar technology provided lower-cost access to space. More...

Associated Launch Vehicles
  • Delta American orbital launch vehicle. The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Delta began as Thor, a crash December 1955 program to produce an intermediate range ballistic missile using existing components, which flew thirteen months after go-ahead. Fifteen months after that, a space launch version flew, using an existing upper stage. The addition of solid rocket boosters allowed the Thor core and Able/Delta upper stages to be stretched. Costs were kept down by using first and second-stage rocket engines surplus to the Apollo program in the 1970's. Continuous introduction of new 'existing' technology over the years resulted in an incredible evolution - the payload into a geosynchronous transfer orbit increasing from 68 kg in 1962 to 3810 kg by 2002. Delta survived innumerable attempts to kill the program and replace it with 'more rationale' alternatives. By 2008 nearly 1,000 boosters had flown over a fifty-year career, and cancellation was again announced. More...
  • Titan American orbital launch vehicle. The Titan launch vehicle family was developed by the United States Air Force to meet its medium lift requirements in the 1960's. The designs finally put into production were derived from the Titan II ICBM. Titan outlived the competing NASA Saturn I launch vehicle and the Space Shuttle for military launches. It was finally replaced by the USAF's EELV boosters, the Atlas V and Delta IV. Although conceived as a low-cost, quick-reaction system, Titan was not successful as a commercial launch vehicle. Air Force requirements growth over the years drove its costs up - the Ariane using similar technology provided lower-cost access to space. More...
  • Thor Burner 2 American orbital launch vehicle. Two stage vehicle consisting of 1 x Thor DM-18A + 1 x Star 37B More...
  • Titan 3D American orbital launch vehicle. Titan 3C without transtage. More...
  • Thor Burner American orbital launch vehicle. Thor DM-18A with 'Burner' upper stage solid rocket packages used for launch of classified payloads. More...

Associated Manufacturers and Agencies
  • USAF American agency overseeing development of rockets and spacecraft. United States Air Force, USA. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: here.

Associated Launch Sites
  • Vandenberg Vandenberg Air Force Base is located on the Central Coast of California about 240 km northwest of Los Angeles. It is used for launches of unmanned government and commercial satellites into polar orbit and intercontinental ballistic missile test launches toward the Kwajalein Atoll. More...
  • Vandenberg SLC10W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a launch emplacement in 1965. More...
  • Vandenberg SLC4E Titan, Atlas launch complex. First designated PALC2-4 and used to launch Atlas Agena D with KH-7 spysats. Rebuilt after MOL cancellation in 1970 to handle Titan 3D with KH-9 and KH-11 spysats. Upgraded in 1989-1990 for Titan 4. More...

SESP Chronology


1971 June 8 - . 14:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 210.
  • SESP 70-1 - . Payload: P70-1 / Burner II No. 12 / OPS 3850. Mass: 260 kg (570 lb). Nation: USA. Agency: USAF STP. Class: Technology. Type: Military technology satellite. Spacecraft: SESP. Decay Date: 1982-01-31 . USAF Sat Cat: 5285 . COSPAR: 1971-054A. Apogee: 580 km (360 mi). Perigee: 544 km (338 mi). Inclination: 90.2000 deg. Period: 95.80 min. Summary: Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1974 October 29 - . 19:30 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4E. LV Family: Titan. Launch Vehicle: Titan 3D. LV Configuration: Titan IIID 23D-4.
  • SESP 73-5 - . Payload: P 73 5 / OPS 8452. Nation: USA. Agency: USAF. Class: Technology. Type: Military technology satellite. Spacecraft: SESP. Decay Date: 1975-05-26 . USAF Sat Cat: 7499 . COSPAR: 1974-085C. Apogee: 2,888 km (1,794 mi). Perigee: 150 km (90 mi). Inclination: 96.9000 deg. Period: 116.30 min. Summary: Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1976 July 8 - . 18:30 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4E. LV Family: Titan. Launch Vehicle: Titan 3D. LV Configuration: Titan IIID 23D-14.
  • SESP 74-2 - . Payload: P 74-2 / OPS 3986. Nation: USA. Agency: USAF. Class: Technology. Type: Military technology satellite. Spacecraft: SESP. Decay Date: 1986-04-24 . USAF Sat Cat: 9007 . COSPAR: 1976-065B. Apogee: 8,048 km (5,000 mi). Perigee: 236 km (146 mi). Inclination: 97.5000 deg. Period: 179.00 min. Summary: Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

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