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Salyut 4
Part of Almaz Family

Salyut 4

Salyut 4
Salyut 4 space station at RKK Energia Museum
Credit: © Mark Wade

Russian manned space station. Four of the initial DOS-1 versions of a civilian Soviet space station were built using converted Almaz military stations. Launched 1973.

AKA: 11F715;17K s/n 124. Status: Operational 1973. First Launch: 1973-05-11. Last Launch: 1974-12-26. Number: 2 . Thrust: 4.09 kN (919 lbf). Gross mass: 18,210 kg (40,140 lb). Unfuelled mass: 16,210 kg (35,730 lb). Specific impulse: 282 s. Height: 13.07 m (42.88 ft). Span: 17.00 m (55.00 ft).

DOS-1 was launched as Salyut 1 on 19 April 1971. The triumph turned to tragedy when the Soyuz-11 crew died due to de-pressurization of their re-entry capsule during return to the earth. Launches of the first series DOS stations continued in a desperate effort to beat Skylab into orbit with a fully successful Soviet space station mission. DOS-2, s/n 122, was destroyed in a launch vehicle explosion en route to orbit in July 1972. DOS-3, s/n 123, reached orbit as Cosmos 557 in 1973 but control was lost before a crew could be sent to the station. DOS-4, the last of the first series, finally flew successfully as Salyut 4 in 1974. Salyut 4 differed from Salyut 1 in having three sets or rotatable solar panels, more electrical power, and a more complete equipment suite.

Salyut 4 represented the second phase of DOS civilian space station. It had 2,000 kg of scientific equipment and two sets of 3 solar panels. It was equipped with the Delta navigation system. Experiments: - Solar telescope OST-1 with main mirror of 25 cm diameter, 2.5 m focal length, built by Crimean Astrophysical Observatory with spectrograph shortwave diffraction spectrometer for far ultraviolet emissions, oriented by maneuvering entire station - two X-ray telescopes - swivel chair for vestibular function tests - lower body negative pressure gear for cardiovascular studies - bicycle ergometer integrated physical trainer (electrically driven running track 1 m X .3 m with elastic cords providing 50 kg load) - penguin suits and alternate athletic suit - 15 medical experiments total - sensors for temperature and characteristics of upper atmosphere ITS-K infrared telescope spectrometer and ultraviolet spectrometer for study of earth's infrared radiation - multispectral earth resources camera - cosmic ray detector - embryological studies - new engineering instruments tested for orientation of station by celestial objects and in darkness - New autonomous navigation system calculates orbital elements without assistance from ground - teletypewriter - two spherical airlocks near main camera to ejects body wastes. Interior floor area: 34.8 sq. m

RCS Coarse No x Thrust: Verniers: 4 X 98 N - Pitch: 2 X 59 N - Yaw: 2 X 59 N - Roll: 2 X 20 N. RCS Fine No x Thrust: 18 x 10 N. RCS Coarse Backup No x Thrust: 4 x 98 N. Spacecraft delta v: 320 m/s (1,040 ft/sec). Electric System: 2.00 average kW.


More at: Salyut 4.

Subtopics

Salyut 4 Expedition 1 Null

Salyut 4 Expedition 2 Null

Family: Soviet Space Stations, Space station, Space station orbit. Country: Russia. Engines: KTDU-35. Launch Vehicles: Proton, Proton-K. Propellants: Nitric acid/Hydrazine. Projects: Salyut. Launch Sites: Baikonur, Baikonur LC81/23, Baikonur LC81/24. Agency: Korolev bureau, MOM. Bibliography: 2, 21, 274, 32, 33, 445, 51, 6, 67, 89, 6849, 13050.
Photo Gallery

Salyut 4 in AssemblySalyut 4 in Assembly
Salyut 4 in Assembly Hall
Credit: RKK Energia


Salyut 4 toiletSalyut 4 toilet
View of Salyut 4 toilet facility - you always wanted to know how they do it in space...
Credit: © Mark Wade


Salyut 4 panelSalyut 4 panel
Close-up of Salyut 4 propellant system control panel
Credit: © Mark Wade


Salyut 4 Main PanelSalyut 4 Main Panel
Salyut 4 Main Control Panel - adopted unchanged from Soyuz 7K-OK
Credit: © Mark Wade


Salyut 4 panelSalyut 4 panel
Salyut 4 Control Panel - above and to the right of the main station control panel
Credit: © Mark Wade


Salyut 4 rear int.Salyut 4 rear int.
Salyut 4 view of rear interior of station
Credit: © Mark Wade


Salyut 4 airlockSalyut 4 airlock
Salyut 4 airlock compartment
Credit: © Mark Wade


Interior of Salyut 4Interior of Salyut 4
Interior of Salyut 4 looking forward.
Credit: © Mark Wade


Salyut 4Salyut 4
Salyut 4 - Soyuz 17


Salyut 4Salyut 4
Credit: © Mark Wade


Salyut 6Salyut 6
Salyut 6 as displayed in Moscow in 1981.
Credit: © Mark Wade


Salyut 4Salyut 4
Credit: Manufacturer Image



1973 May 11 - . 00:20 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K.
  • Cosmos 557 - . Payload: Zarya s/n 123. Mass: 19,400 kg (42,700 lb). Nation: Russia. Agency: MOM. Program: Salyut. Class: Manned. Type: Manned space station. Spacecraft Bus: Almaz. Spacecraft: Salyut 4. Duration: 10.98 days. Decay Date: 1973-05-22 . USAF Sat Cat: 6498 . COSPAR: 1973-026A. Apogee: 225 km (139 mi). Perigee: 206 km (128 mi). Inclination: 51.6000 deg. Period: 88.90 min. Salyut failure. Unsuccessful mission. Salyut out of control. Decayed May 22, 1973. Was to have been manned by initial crew of Leonov and Kubasov. Last chance to upstage Skylab, launched three days later..

1974 December 26 - . 04:15 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24. LV Family: Proton. Launch Vehicle: Proton-K.
  • Salyut 4 - . Payload: Zarya s/n 124. Mass: 18,500 kg (40,700 lb). Nation: Russia. Agency: MOM. Program: Salyut. Class: Manned. Type: Manned space station. Spacecraft Bus: Almaz. Spacecraft: Salyut 4. Duration: 768.82 days. Decay Date: 1977-02-02 . USAF Sat Cat: 7591 . COSPAR: 1974-104A. Apogee: 251 km (155 mi). Perigee: 212 km (131 mi). Inclination: 51.6000 deg. Period: 89.10 min.

    Deorbited February 2, 1977.
    Maneuver Summary:
    211km X 250km orbit to 215km X 286km orbit. Delta V: 11 m/s
    211km X 284km orbit to 276km X 344km orbit. Delta V: 35 m/s
    277km X 342km orbit to 338km X 351km orbit. Delta V: 19 m/s
    330km X 340km orbit to 337km X 350km orbit. Delta V: 4 m/s
    337km X 349km orbit to 339km X 351km orbit. Delta V: 1 m/s
    332km X 348km orbit to 348km X 355km orbit. Delta V: 6 m/s
    347km X 354km orbit to 343km X 351km orbit. Delta V: 1 m/s
    335km X 344km orbit to 335km X 360km orbit. Delta V: 4 m/s
    335km X 360km orbit to 342km X 361km orbit. Delta V: 2 m/s
    330km X 351km orbit to 344km X 353km orbit. Delta V: 4 m/s
    186km X 187km orbit to 90km X 186km orbit. Delta V: 28 m/s
    Total Delta V: 87/115 m/s.
    Officially: Further testing of station design, on-board systems and equipment; conduct of scientific and technical research and experiments in outer space. Further testing of station design, on-board systems and equipment; conduct of scientific and technical researc h and experiments in outer space.


1977 February 2 - .
  • Burnup of the Salyut 4 Space Station (USSR) - . Nation: Russia. Spacecraft Bus: Almaz. Spacecraft: Salyut 4.


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