Encyclopedia Astronautica
Salyut 6 EP-5-1



isoyuz33.jpg
Salyut 6 EP-5-1
Credit: www.spacefacts.de - www.spacefacts.de
Crew: Ivanov Georgi, Rukavishnikov. First Bulgarian astronaut. Manned two crew. Mission to swap Soyuz lifeboats docked to station. Backup crew: Aleksandrov Aleksandr, Romanenko.

Manned two crew. Flight under the Intercosmos programme of an international team consisting of N N Rukavishnikov (USSR) and G I Ivanov (Bulgaria). Unsuccessful mission. Failed to rendezvous with Salyut 6. Recovered April 12, 1979 16:35 GMT.

Narrative (adapted from D S F Portree's Mir Hardware Heritage, NASA RP-1357, 1995)

The problems began when Soyuz 33 fired its main engine while closing to within 4 km of the station. The burn, the sixth of the flight, was to have lasted 6 seconds, but the engine shut down after 3 seconds. The Igla docking system also failed. The EO-3 crew aboard Salyut 6 reported flames shooting sideways from the main engine, toward the backup engine, at the time of the shutdown. The docking was called off and the Soyuz 33 crew conducted a to return to Earth using the backup engine. The engine fired but did not shut off at the end of the planned 188-sec burn. Rukavishnikov, uncertain if the engine operated at the proper thrust, let it burn an additional 25 sec before shutting it down manually. As a result, Soyuz 33 made a steep ballistic reentry with gravity loads up to 10 g's. Because the service module was discarded after deorbit burn, examination of the failed engine was impossible. The Soyuz 33 crew was to have traded its spacecraft for Soyuz 32. Still uncertain of the reliability of the Soyuz, Soyuz 34 was launched unmanned to the station to provide the crew with a fresh lifeboat.

AKA: Saturn (Saturn ); Soyuz 33.
First Launch: 1979.04.10.
Last Launch: 1979.04.12.
Duration: 1.96 days.

More... - Chronology...


Associated People
  • Rukavishnikov Rukavishnikov, Nikolai Nikolayevich (1932-2002) Russian engineer cosmonaut. Flew on Soyuz 10, Soyuz 16, Salyut 6 EP-5-1. More...
  • Ivanov, Georgi Ivanov, Georgi (1940-) Bulgarian pilot cosmonaut. Flew on Salyut 6 EP-5-1. First Bulgarian astronaut. Changed his name when he was selected for cosmonaut training because Kakalov had a scatalogical meaning in Russian. Later member of the Bulgarian Parliament. More...
  • Romanenko Romanenko, Yuri Viktorovich (1944-) Russian pilot cosmonaut. Flew on Salyut 6 EO-1, Salyut 6 EP-8, Mir LD-1. Father of cosmonaut Roman Romanenko. 430 cumulative days in space. More...
  • Aleksandrov, Aleksandr Aleksandrov, Aleksandr Panayotov 'Sasha' (1951-) Bulgarian pilot cosmonaut. Flew on Mir EP-2. Graduated from Air Force Academy, 1974. Candidate of technical sciences degree, 1983. Lieutenant Colonel, Bulgarian Air Force. More...

See also
Associated Programs
  • Salyut 6 Mishin was authorised in December 1973 to build an improved design DOS-5 version of the Salyut station using Almaz facilities. Mishin's bureau borrowed the two docking port configuration of Chelomei's Almaz OPS-2 This station's second docking port would allow rotation of crews and resupply/refueling using unmanned Progress spacecraft. More...

Salyut 6 EP-5-1 Chronology


1979 April 10 - . 17:34 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz 11A511U.
1979 April 12 - .
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