1978-081A
The EP-4 Interkosmos crew were Valeriy Bykovskiy and researcher-astronaut Sigmund Jahn of the DDR. They were launched in 7K-T No. 47 (Soyuz-31) on 1978 Aug 26. After docking with Salyut-6 the craft was assigned to the EO-2 crew, Kovalyonok and Ivanchenkov. They moved it to the forward Salyut port in Sep 1978 and used it to return to Earth in Nov 1978.
| Soyuz-31 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1978 Aug 26 | 1451:30 | Launch by Soyuz-U | KB |
| 1454 | Blok BVGD sep | ||
| 1456 | Blok A sep | ||
| 1500 | Blok I MECO | ||
| 1500 | Blok I sep | ||
| 88.8 193 x 243 x 51.6 | |||
| 271 x 371 x 51.6 | |||
| 1978 Aug 27 | 1637:38 | Docked with Salyut-6 +X | |
| 1800 | EP-4 crew to Salyut-6 | ||
| 1978 Sep 7 | 1025 | EO-2 crew to Soyuz-31 | |
| 1053 | Undocked +X | ||
| 1132 | Docked -X | ||
| 1210 | EO-2 crew to Salyut-6 | ||
| 1978 Nov 2 | 0520 | EO-2 crew to Soyuz-31 | |
| 0746 | Undocked | ||
| 1015:17 | Retrofire | ||
| 1019? | DO CO | ||
| 1037? | Modules sep | ||
| 1042? | Entry | ||
| 1104:17 | Landed 180 km SE of Dzezkazgan | ||
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