Soyuz T-4

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Mission emblem
Crew postage stamp
Mission dates
Mission: Soyuz T-4
COSPAR-ID : 1981-023A
Spacecraft: Soyuz 7K-ST ( GRAY index  11F732)
serial number 10L
Dimensions: 6850 kg
Launcher: Soyuz-U (GRAY index 11A511U)
Call sign: Фотон (" photon ")
Crew: 2
Begin: March 12, 1981, 19:00:11  UTC
Starting place: Baikonur 1/5
Space station: Salyut 6
Coupling: March 13, 1981, 20:33 UTC
Decoupling: May 26, 1981, 09:20 UTC
Landing: May 26, 1981, 12:37:34 UTC
Landing place: 125 km east of Djeskazgan
Flight duration: 74d 17h 37m 23s
Earth orbits: 1178
Rotation time : 88.7 min
Apogee : 250 km
Perigee : 201 km
◄ Before / After ►
Soyuz T-3
(manned) 		Soyuz 39
(manned)

Soyuz T-4 is the mission name for the flight of a Soviet Soyuz spaceship to the Soviet space station Salyut 6, which started on March 12, 1981 . As the sixth and last long-term crew of this station, the mission was named Salyut 6 EO-6 . It was the 15th visit by a manned Soyuz spacecraft to this space station and the 62nd flight in the Soviet Soyuz program.

crew

Main crew

Kowaljonok also achieved the Soviet record of three flights into orbit.

Substitute team

As a result of the training, the original substitute team Kowaljonok / Savinych was selected as the first team.

Mission overview

Soyuz T-4 brought the sixth and last regular team (EO-6) to Salyut 6 station. The fifth team consisted of three cosmonauts, but had only been on board the space station for a relatively short time, the sixth team again consisted of only two space travelers.

The coupling was delayed because the “Argon” on-board computer reported that contact with the TsUP ground station had been interrupted.

During their stay, Kowaljonok and Savinych received the guest teams from Soyuz 39 and Soyuz 40 with cosmonauts from Mongolia and Romania .

See also

Web links