Soyuz 40
 Soyuz 40 is launched from the Baikonur Cosmodrome on 14 May 1981. | |
| COSPAR ID | 1981-042A |
|---|---|
| SATCAT no. | 12454 |
| Mission duration | 7 days, 20 hours, 41 minutes, 52 seconds |
| Orbits completed | 124 |
| Spacecraft properties | |
| Spacecraft type | Soyuz 7K-T |
| Manufacturer | NPO Energia |
| Launch mass | 6,800 kilograms (15,000 lb) |
| Crew | |
| Crew size | 2 |
| Members | Leonid Popov Dumitru Prunariu |
| Callsign | Dnieper |
| Start of mission | |
| Launch date | 14 May 1981, 17:16:38 UTC |
| Rocket | Soyuz-U |
| Launch site | Baikonur 1/5 |
| End of mission | |
| Landing date | 22 May 1981, 13:58:30 UTC |
| Landing site | 225 km SE of Dzhezkazgan |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 198.1 kilometres (123.1 mi) |
| Apogee altitude | 287 kilometres (178 mi) |
| Inclination | 51.6 degrees |
| Period | 89.6 minutes |
| Docking with Salyut 6 | |
 L-R: Popov and Prunariu Soyuz programme (Crewed missions) | |
The Soyuz 40 mission was a 1981 Soviet crewed spaceflight and the final flight of the Soyuz 7K-T spacecraft. It was a collaboration between the Soviet Union and Romania.[1]
Crew
| Position | Crew | |
|---|---|---|
| Commander |  Leonid PopovSecond spaceflight | |
| Research Cosmonaut |  Dumitru PrunariuOnly spaceflight | |
Backup crew
| Position | Crew | |
|---|---|---|
| Commander | Yuri Romanenko
| |
| Research Cosmonaut | Dumitru Dediu
| |
Mission parameters
- Mass: 6800 kg
- Perigee: 198.1 km
- Apogee: 287 km
- Inclination: 51.6°
- Period: 89.06 minutes
Mission highlights
Soyuz 40 was the 16th expedition to Salyut 6 and carried the ninth international crew. It also ended the first phase of the Intercosmos program by carrying Romanian cosmonaut Dumitru Prunariu and Soviet cosmonaut Leonid Popov to the station. In all, nine Intercosmos missions were launched between 1978 and 1981.
Soyuz 40 was the last of the original Soyuz spacecraft (due to its replacement by the Soyuz-T) and the last Soyuz spacecraft to dock with Salyut 6. During the crew's stay, Prunariu studied the Earth's magnetic field. Earth observations had to be delayed until the last day of the flight, when Salyut 6 passed over Romania in daylight. During this time the crew also tested the station's orientation system.
See also
References
- ^ The mission report is available here: http://www.spacefacts.de/mission/english/soyuz-40.htm
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