Back Союз 31 Bulgarian Soiuz 31 Catalan Sojuz 31 Czech Sojus 31 German Soyuz 31 Spanish سایوز۳۱ Persian Sojuz 31 Finnish Soyouz 31 French Soiuz 31 Galician סויוז 31 HE
 Bykowski (above) and Jähn (below) | |
| COSPAR ID | 1978-081A |
|---|---|
| SATCAT no. | 11010 |
| Mission duration | 67 days, 20 hours, 12 minutes, 47 seconds |
| Orbits completed | 124 |
| Spacecraft properties | |
| Spacecraft type | Soyuz 7K-T |
| Manufacturer | NPO Energia |
| Launch mass | 6,800 kilograms (15,000 lb) |
| Crew | |
| Crew size | 2 |
| Launching | Valery Bykovsky Sigmund Jähn |
| Landing | Vladimir Kovalyonok Aleksandr Ivanchenkov |
| Callsign | Ястреб (Yastreb - "Hawk") |
| Start of mission | |
| Launch date | 26 August 1978, 14:51:30 UTC |
| Rocket | Soyuz-U |
| Launch site | Baikonur 1/5[1] |
| End of mission | |
| Landing date | 2 November 1978, 11:04:17 UTC |
| Landing site | 140 kilometres (87 mi) SE of Dzhezkazgan |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 196.8 kilometres (122.3 mi) |
| Apogee altitude | 259.9 kilometres (161.5 mi) |
| Inclination | 51.64 degrees |
| Period | 88.81 minutes |
| Docking with Salyut 6 | |
| Docking port | Aft port |
| Docking date | 28 August 1978, 16:37:37 UTC[2] |
| Undocking date | 07 September 1978, 16:37:37 UTC[3] |
| Time docked | 10d |
| Redocking with Salyut 6 | |
| Redocking port | Front port |
| Redocking date | 07 September 1978, 16:37:37 UTC[3] |
| Unredocking date | 02 November 1978, 11:04:17 UTC[2] |
| Time redocked | 55d 18h 26m |
| |
Soyuz 31 (Russian: Союз 31, Union 31) was a 1978 Soviet crewed space flight to the Salyut 6 space station.[2] It was the seventh mission to and sixth successful docking at the orbiting facility. The Soyuz 31 crew were the second to visit the long-duration Soyuz 29 resident crew.
Soyuz 31 carried Valery Bykovsky and Sigmund Jähn, the first German cosmonaut, into space. They swapped Soyuz craft with the long-duration crew and returned to Earth in Soyuz 29, the resident crew returned to Earth in Soyuz 31.
- ^ "Baikonur LC1". Encyclopedia Astronautica. Archived from the original on 2009-04-15. Retrieved 2009-03-04.
- ^ a b c The mission report is available here: http://www.spacefacts.de/mission/english/soyuz-31.htm
- ^ a b Relocation