Soyuz 20

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Mission dates
Mission: Soyuz 20
COSPAR-ID : 1975-106A
Spacecraft: Soyuz 7K-T (GRAY index 11F615A9)
serial number 64
Dimensions: 6570 kg
Launcher: Soyuz U ( GRAY index  11A511U)
Crew: no
Begin: November 17, 1975, 04:38:00  UTC
Starting place: Baikonur 1/5
Space station: Salyut 4
Coupling: November 19, 1975, 16:19 UTC
Decoupling: February 15, 1976, 23:07 UTC
Landing: February 16, 1976, 02:24:00 UTC
Landing place: 56 km southwest of Arkalik
Flight duration: 90d 11h 46m
Earth orbits: 1470
Rotation time : 89.1 min
Apogee : 251 km
Perigee : 177 km
◄ Before / After ►
Kosmos 772
(unmanned) 		Soyuz 21
(manned)
Previous manned mission:
Soyuz 19

Soyuz 20 is the mission name for the unmanned flight of a Soviet Soyuz spacecraft to the Salyut 4 space station, which began on November 17, 1975 . It was the third visit by a Soyuz spacecraft to this space station and the 37th flight in the Russian Soyuz program.

Mission overview

Soyuz 20 was a modified variant ( GRAU index 11F615A9) of the Soyuz spacecraft and carried out the complete review of the spacecraft's improved on-board systems under various flight conditions. The entire flight was automatic. The spaceship carried a biological payload. Living organisms were exposed to weightlessness for three months.

See also

Web links