Soyuz 33

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Mission emblem
Mission emblem
Mission dates
Mission: Soyuz 33
COSPAR-ID : 1979-029A
Spacecraft: Soyuz 7K-T ( GRAY index  11F615A8)
serial number 49
Dimensions: 6860 kg
Launcher: Soyuz U (GRAY index 11A511U)
Call sign: Сатурн (" Saturn ")
Crew: 2
Begin: April 10, 1979, 17:34:34  UTC
Starting place: Baikonur 31/6
Space station: Salyut 6
Landing: April 12, 1979, 16:35:40 UTC
Landing place: 320 km southeast of Djeskasgan
Flight duration: 1d 23h 1m 6s
Earth orbits: 31
Rotation time : 88.99 (91.47) min
Apogee : 279 (364) km
Perigee : 199 (348) km
◄ Before / After ►
Soyuz 32
(manned) 		Soyuz 34
(manned)

Soyuz 33 is the mission designation for the flight of a Soviet Soyuz spacecraft to the Soviet space station Salyut 6, which started on April 10, 1979 . It was to be the eighth visit by a Soyuz spacecraft to this space station and was the 53rd flight in the Soviet Soyuz program.

crew

Main team

With this flight, Rukawischnikow was the fifth cosmonaut, after Schatalow (1971), Jelissejew (1971), Klimuk (1978) and Bykowski (1978), to make three space flights. This was the first space flight in which an Energija engineer was given command of a Soyuz spacecraft.

Substitute team

Mission overview

The fourth visit of an Interkosmos crew to Salyut 6 with a Bulgarian cosmonaut was supposed to be the only visiting expedition to the third regular crew ( Salyut 6 EO-3 ) of Salyut 6 with the usual program and at the same time the spacecraft Soyuz 32 , whose lifespan had expired after 90 days , replace.

During the approach, the sixth and last 6 seconds ignition of the main engine of Soyuz 33 was initiated as planned at a distance of 4 km from the station. However, the subsequent burn process ended after just three seconds. The cosmonauts in the station observed a flame in the direction of the reserve engine. In addition, the control system of the coupling Igla reported a malfunction. The flight was then canceled.

During the braking maneuver, which was carried out with the reserve system, there was no automatic shutdown after the scheduled 188 seconds of burning time. It was only 25 seconds later that Nikolai Rukawischnikow switched off the engine manually. As a result, a purely ballistic descent path with an extremely high physical load on the cosmonauts of about 10 g (98 m / s²) was achieved. Since the service module was disconnected after the braking maneuver, it was not possible to fully clarify the incidents.

See also

Web links