| Progress 11 | |||||||||
| Mission Type: | Salyut 6 resupply | ||||||||
| Cospar Id: | 1980-079A | ||||||||
| Satcat: | 11993[1] | ||||||||
| Spacecraft: | Progress (No.111) | ||||||||
| Spacecraft Type: | Progress 7K-TG[2] | ||||||||
| Manufacturer: | NPO Energia | ||||||||
| Launch Date: | 28 September 1980, 15:09:55 UTC | ||||||||
| Launch Rocket: | Soyuz-U | ||||||||
| Launch Site: | Baikonur, Site 1/5 | ||||||||
| Docking: |
| ||||||||
| Disposal Type: | Deorbited | ||||||||
| Decay Date: | 11 December 1980, 14:00 UTC | ||||||||
| Orbit Epoch: | 28 September 1980 | ||||||||
| Orbit Reference: | Geocentric | ||||||||
| Orbit Regime: | Low Earth | ||||||||
| Orbit Periapsis: | 188 km | ||||||||
| Orbit Apoapsis: | 241 km | ||||||||
| Orbit Inclination: | 51.6° | ||||||||
| Orbit Period: | 88.7 minutes | ||||||||
| Apsis: | gee | ||||||||
| Programme: | Progress (spacecraft) | ||||||||
| Previous Mission: | Progress 10 | ||||||||
| Next Mission: | Progress 12 | ||||||||
Progress 11 was a Soviet unmanned Progress cargo spacecraft, which was launched in September 1980 to resupply the Salyut 6 space station.
Progress 11 was a Progress 7K-TG spacecraft. The eleventh of forty three to be launched, it had the serial number 111.[4] [5] 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, which increased to around when fully fuelled. It measured in length, and in diameter. Each spacecraft could accommodate up to 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.[6]
Progress 11 launched on 28 September 1980 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U rocket.[7]
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.[8]
It remained in orbit until 11 December 1980, when it was deorbited. The deorbit burn occurred at 14:00 UTC.