Soyuz T-4

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Soyuz T-4
Mission statistics
Mission name Soyuz T-4
Crew size 2
Call sign Photon
Launch date March 12, 1981
19:00:11 UTC
Gagarin's Start
Landing May 26, 1981
12:37:34 UTC
125 km E Dzhezkazgan
Mission duration 74d/17:37:23
Number of orbits 1178
Related missions
Previous mission Next mission
Soyuz T-3 Soyuz 39

Contents

[edit] Crew

Number in parentheses indicates number of spaceflights by each individual prior to and including this mission.

[edit] Backup crew

[edit] Mission parameters

  • Mass: 6850 kg
  • Perigee: 201 km
  • Apogee: 250 km
  • Inclination: 51.6°
  • Period: 88.7 minutes

[edit] Mission highlights

14th expedition to Salyut 6.

Docking with Salyut 6 delayed after the onboard Argon computer determined it would occur outside of radio range with the TsUP. In mid-May, Kovalyonok and Savinykh replaced the Soyuz-T 4 probe with a Salyut drogue. This may have been an experiment to see if a Soyuz-T docked to a space station could act as a rescue vehicle in the event that an approaching Soyuz-T equipped with a probe experienced docking difficulties and could not return to Earth.

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19 · 22
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10 · 11
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1 · 3 · 4 · 5 · 6 · 7 · 8 · 9
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