Soyuz 33
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| Soyuz 33 | |||||
| Mission statistics | |||||
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| Mission name | Soyuz 33 | ||||
| Crew size | 2 | ||||
| Call sign | Сатурн (Saturn - "Saturn" | ||||
| Launch date | April 10, 1979 17:34:34 UTC Gagarin's Start |
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| Landing | April 12, 1979 16:35:40 UTC 320 km (200 mi) SE of Dzhezkazgan |
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| Mission duration | 1d/23:01:06 | ||||
| Number of orbits | 31 | ||||
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Soyuz 33 (Russian: Союз 33, Union 33) was intended to dock with Salyut 6; it failed to do so due to an engine malfunction, putting an end to the Bulgarian Intercosmos mission.
When approaching to within 4 kilometres (2.5 mi) of the station the engine was fired for a planned six second burn, but it shut down after three seconds and the Igla docking system also shut down. The long-duration crew on the Salyut 6 (launched on Soyuz 32) reported flames shooting out of the main engine and towards the back-up engine at the time of the shutdown. The docking was called off and the craft began its return to earth.
During the descent to earth the back-up engine did not shut down at the end of the planned 188 second burn. Since it was not clear if the engine had operated at its correct thrust Rukavishnikov let it burn for a further 25 seconds before shutting it down manually. As a result of this Soyuz 33 made a steep ballistic reentry and experienced accelerations of up to 10g (100 m/s²). Examination of the engine was impossible as the service module was discarded after the mission.
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[edit] Crew
Number in parentheses indicates number of spaceflights by each individual prior to and including this mission.
- Nikolai Rukavishnikov (3) - Commander
- Georgi Ivanov (1) - Research Cosmonaut
[edit] Backup crew
- Yuri Romanenko - Commander
- Aleksandar Aleksandrov - Research Cosmonaut
[edit] Mission parameters
- Mass: 6,860 kg (15,100 lb)
- Perigee: 198.6 km (123.4 mi)
- Apogee: 279.2 km (173.5 mi)
- Inclination: 51.63°
- Period: 88.99 minutes
[edit] Mission highlights
- Intercosmos mission to Salyut 6 with Bulgarian cosmonaut.
- Failed to dock with Salyut 6 due to main engine fault.
- Retro burn with reserve engine.
- Reentry acceleration of 10 g (100 m/s²).
[edit] External links
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