1967-037A
The first piloted test flight of the Soyuz was Soyuz-1, flown by Pol. Vladimir M. Komarov on 1967 Apr 23. The spacecraft was 11F615 (7K-OK) No. 4, with an active docking system.
Mass of Soyuz-1 at insertion was 6450 kg. The mission was in trouble from the beginning; one solar panel failed to deploy, and the spacecraft was not correctly stabilized; an attitude control sensor malfunctioned. It was reported that the first attempt at deorbit on Apr 23 was unsuccessful. A second burn two orbits later on Apr 24 was successful, but the vehicle was off course and soon an onboard signal indicated a ballistic reentry. The main parachute stuck in its deployment container due to errors in preflight testing of the craft. It failed to release, and the backup parachute tangled with the main one's drogue. At an altitude of 6 km the capsule tumbled, crashing into the ground near Orenburg at a speed of 150 km/h. The heat shield was not jettisoned at the usual 3 km altitude, and after impact the retro-rockets detonated and the spacecraft exploded, leaving only smoking wreckage for the recovery crews. Location of the crash site was at 51N 58E, 65 km E of Orsk.
| Soyuz-1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1967 Apr 23 | 0035 | Launch by Soyuz | KB |
| 0044 | T+9:00 Orbit insertion | ||
| 88.70 197 x 224 x 51.81 | |||
| 0700 | 88.60 197 x 214 x 51.64 | ||
| 1020 | Mission abort, preparation for landing | ||
| 1900 | 88.55 195 x 211 x 51.63 | ||
| 1967 Apr 23 | 2356:12 | Retro failed to burn | |
| 1967 Apr 24 | 0257:15 | Retrofire, 146s | |
| 0259:38 | Retro cutoff | ||
| 0314:09 | Accident-2 signal, to ballistic mode | ||
| 0315:14 | BO and PAO sep | ||
| 0315 | Reentry | ||
| 0319 | Parachute tangled | ||
| 0322:52 | Impact | ||
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