Kosmos 1669
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Mission type | Salyut 7 resupply |
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Operator | OKB-1 |
COSPAR ID | 1985-062A ![]() |
SATCAT no. | 15918 |
Mission duration | 41 days, 12 hours and 15 minutes |
Spacecraft properties | |
Spacecraft | Progress s/n 126 |
Spacecraft type | Progress 7K-TG |
Manufacturer | NPO Energia |
Launch mass | 7280 kg |
Dry mass | 7020 kg |
Payload mass | 2500 kg |
Dimensions | 7.48 m in length and 2.72 m in diameter |
Start of mission | |
Launch date | 19 July 1985, 13:05 UTC |
Rocket | Soyuz-U s/n B15000-446 |
Launch site | Baikonur 1/5 |
Contractor | OKB-1 |
End of mission | |
Disposal | Deorbited |
Decay date | 30 August 1985, 01:20 UTC |
Orbital parameters | |
Reference system | Geocentric |
Regime | Low Earth |
Perigee altitude | 298 km |
Apogee altitude | 358 km |
Inclination | 51.66° |
Period | 91.0 minutes |
Epoch | 19 July 1985 |
Docking with Salyut 7 | |
Docking port | Aft |
Docking date | 21 July 1985, 15:05 UTC |
Undocking date | 28 August 1985, 21:50 UTC |
Time docked | 38 days, 6 hours and 45 minutes |
Cargo | |
Mass | 2500 kg |
Progress (spacecraft) ← Progress 24 Progress 25 → Kosmos (satellites) ← Kosmos 1668 Kosmos 1670 → |
Kosmos 1669 (Russian: Космос-1669) was a Progress spacecraft used to resupply the Salyut 7 space station. It was a Progress 7K-TG spacecraft with the serial number 126.
Mission
Kosmos-1669 was launched by a Soyuz-U carrier rocket from Site 1/5 at the Baikonur Cosmodrome, at 13:05 UTC on 19 July 1985. The spacecraft docked with the aft port of Salyut 7 at 15:05 UTC on 21 July 1985. Following undocking on 28 August 1985, it moved away from the station, before returning and redocking to test the reliability of the docking system.[1] It undocked for a second time at 21:50 UTC,[2] and was deorbited on 30 August 1985, with the spacecraft burning up over the Pacific Ocean at 01:20 UTC.
Salyut-7
Kosmos-1669 was the second cargo spacecraft (after Progress 24) to visit Salyut 7 after its reactivation, and also the last Progress flight as part of the Salyut programme. It delivered new spacesuit, to replace ones damaged by cold temperatures whilst Salyut 7 was deactivated,[3] as well as replacement parts and consumables. This Progress mission was followed by one last cargo mission to Salyut 7, but carried out by an TKS spacecraft: TKS-4, which would become the fourth and last flight of an TKS spacecraft. The next following mission of a Progress cargo spacecraft, Progress 25, flew to Mir.[1]
As of 2009, Kosmos-1669 is the only Progress spacecraft to have received a Kosmos designation, which are usually reserved for military, experimental and failed spacecraft. It has been reported that this may have been an error due to confusion with a TKS spacecraft which later became Kosmos 1686,[4] or that the spacecraft may have gone out of control shortly after launch, but then been recovered after the Kosmos designation had been applied.[1] Alternatively, it could have been given the designation as it was used to test modifications that would be used on future Progress missions.[3] Some news agencies reported that it was a free-flying Progress-derived spacecraft,[3] or that it was a new type of spacecraft derived from the Progress.[5]
See also
References
- ^ a b c Wade, Mark. "Progress". Encyclopedia Astronautica. Archived from the original on 26 December 2001. Retrieved 11 April 2009.
- ^ Christy, Robert. "Third Expedition to Salyut 7 - 1984". Zarya. Retrieved 11 April 2009.
- ^ a b c Portree, David S. F (March 1995). "Mir Hardware Heritage". NASA. Archived from the original on 6 April 2002. Retrieved 11 April 2009.
This article incorporates text from this source, which is in the public domain.
- ^ Christy, Robert. "Fourth Expedition to Salyut 7 - 1985". Zarya. Retrieved 11 April 2009.
- ^ "New Soviet Craft Docks With Salyut". New York Times. 23 July 1985. Retrieved 11 April 2009.
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