Engineering:Soyuz 20
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| Mission type | Orbital test flight |
|---|---|
| Operator | Soviet space program |
| COSPAR ID | 1975-106A |
| SATCAT no. | 8430 |
| Mission duration | 90 days, 11 hours and 47 minutes |
| Orbits completed | 1470 |
| Spacecraft properties | |
| Spacecraft | Soyuz 7K-T No.8 |
| Spacecraft type | Soyuz 7K-T/A9 |
| Manufacturer | NPO Energia |
| Launch mass | 6,570 kg (14,480 lb)[1] |
| Landing mass | 2,800 kg (6,200 lb) |
| Start of mission | |
| Launch date | 17 November 1975, 14:36:37 UTC |
| Rocket | Soyuz-U |
| Launch site | Baikonur 1/5[2] |
| End of mission | |
| Landing date | 16 February 1976, 02:24 UTC |
| Landing site | 56 km at the southwest of Arkalyk, Kazakhstan |
| Orbital parameters | |
| Reference system | Geocentric orbit[3] |
| Regime | Low Earth orbit |
| Perigee altitude | 199.7 km (124.1 mi) |
| Apogee altitude | 263.5 km (163.7 mi) |
| Inclination | 51.6° |
| Period | 88.8 minutes |
| Docking with Salyut 4[4][5] | |
| Docking date | 19 November 1975, 16:19 UTC |
| Undocking date | 16 February 1976, 23:07 UTC |
| Time docked | 89 days, 6 hours and 48 minutes |
Soyuz 20 (Russian: Союз 20, Union 20) was an uncrewed spacecraft launched by the Soviet Union. It was a long-duration test of the Soyuz spacecraft that docked with the Salyut 4 space station. Soyuz 20 performed comprehensive checking of improved on-board systems of the spacecraft under various flight conditions. It also carried a biological payload. Living organisms were exposed to three months in space. The primary goal of the mission was to test hardware modifications to the Soyuz 7K-T spacecraft that would extend its operating life from two to three months in preparation for long-duration Salyut crew residencies.
Mission parameters
- Mass: 6,570 kg (14,480 lb) [1]
- Perigee: 199.7 km (124.1 mi)[3]
- Apogee: 263.5 km (163.7 mi)
- Inclination: 51.6°
- Period: 88.8 minutes
Return
It was recovered on 16 February 1976 at 02:24 UTC.[1]
References
- ↑ 1.0 1.1 1.2 "Soyuz 20". NASA. 14 May 2020. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1975-106A.
This article incorporates text from this source, which is in the public domain.
- ↑ Mark Wade. "Baikonur LC1". Encyclopedia Astronautica. http://astronautix.com/b/baikonurlc1.html. Retrieved 4 March 2009.
- ↑ 3.0 3.1 "Soyuz 20: Trajectory". NASA. 14 May 2020. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/displayTrajectory.action?id=1975-106A. This article incorporates text from this source, which is in the public domain.
- ↑ "The Salyut Era: First Space Stations". https://www.russianspaceweb.com/spacecraft_manned_salyut.html.
- ↑ "Salyut 4". https://www.orbitalfocus.uk/Diaries/StationsDOS/Salyut4.php.
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