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Progress 11

A Progress 7K-TG spacecraft
Mission type	Salyut 6 resupply
COSPAR ID	1980-079A
SATCAT no.	11993
Spacecraft properties
Spacecraft	Progress (No.111)
Spacecraft type	Progress 7K-TG
Manufacturer	NPO Energia
Start of mission
Launch date	28 September 1980, 15:09:55 UTC
Rocket	Soyuz-U
Launch site	Baikonur, Site 1/5
End of mission
Disposal	Deorbited
Decay date	11 December 1980, 14:00 UTC
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	188 km
Apogee altitude	241 km
Inclination	51.6°
Period	88.7 minutes
Epoch	28 September 1980
Docking with Salyut 6
Docking port	Aft
Docking date	30 September 1980, 17:03 UTC
Undocking date	9 December 1980, 10:23 UTC
Progress (spacecraft)← Progress 10Progress 12 →

Progress 11 (Russian: Прогресс 11) was a Soviet unmanned Progress cargo spacecraft, which was launched in September 1980 to resupply the Salyut 6 space station.

Spacecraft

Progress 11 was a Progress 7K-TG spacecraft. The eleventh of forty three to be launched, it had the serial number 111. The Progress 7K-TG spacecraft was the first generation Progress, derived from the Soyuz 7K-T and intended for uncrewed logistics missions to space stations in support of the Salyut programme. On some missions the spacecraft were also used to adjust the orbit of the space station.

The Progress spacecraft had a dry mass of 6,520 kilograms (14,370 lb), which increased to around 7,020 kilograms (15,480 lb) when fully fuelled. It measured 7.48 metres (24.5 ft) in length, and 2.72 metres (8 ft 11 in) in diameter. Each spacecraft could accommodate up to 2,500 kilograms (5,500 lb) of payload, consisting of dry cargo and propellant. The spacecraft were powered by chemical batteries, and could operate in free flight for up to three days, remaining docked to the station for up to thirty.

Launch

Progress 11 launched on 28 September 1980 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U rocket.

Docking

Progress 11 docked with the aft port of Salyut 6 on 30 September 1980 at 17:03 UTC, and was undocked on 9 December 1980 at 10:23 UTC.

Decay

It remained in orbit until 11 December 1980, when it was deorbited. The deorbit burn occurred at 14:00 UTC.

See also

• 1980 in spaceflight
• List of Progress missions
• List of uncrewed spaceflights to Salyut space stations

References

1. ^ "Launchlog". Jonathan's Space Report. Retrieved 4 December 2020.
2. ^ "Progress 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 4 December 2020.
3. ^ "Cargo spacecraft "Progress 11"". Manned Astronautics figures and facts. Archived from the original on 14 October 2007.
4. Krebs, Gunter. "Progress 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 26 November 2010.
5. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 26 November 2010.
6. ^ Hall, Rex D.; Shayler, David J. (2003). Soyuz: A Universal Spacecraft. Springer-Praxis. pp. 239–250. ISBN 1-85233-657-9.
7. "Progress 11". NASA. Retrieved 4 December 2020. This article incorporates text from this source, which is in the public domain.
8. ^ "Salyut 6". Astronautix. Archived from the original on 10 December 2016. Retrieved 4 December 2020.

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