1976-064A
The 7K-T No. 64 spacecraft was launched in Jul 1976, carrying Boris Volynov and Vitaliy Zholobov. It was named Soyuz-21 on reaching orbit. The spacecraft was an 11F615A9 variant (although some records say Soyuz-21 was an A8, 7K-T No. 41). During undocking on Aug 24, the latches failed to separate for about an orbit.
| Soyuz-21 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1976 Jul 6 | 1208:45 | Launch by Soyuz-U | KB |
| 1210 | Blok BVGD sep | ||
| 1213 | Blok A sep | ||
| 1217 | Blok I MECO | ||
| 1217 | Blok-I sep | ||
| 193 x 253 x 51.6 | |||
| 89.7 246 x 274 x 51.6 | |||
| 1976 Jul 7 | 1340 | Docked with Almaz OPS 3 (Salyut 5) | |
| 1976 Aug 24 | 1400? | Undocking failed to complete | |
| 1512 | Undocking complete | ||
| 1748? | DO | ||
| 1751? | DO CO | ||
| 1804? | Modules sep | ||
| 1810? | Entry | ||
| 1832:17 | Landed | ||
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