Progress 6
A Progress 7K-TG spacecraft
Mission typeSalyut 6 resupply
COSPAR ID1979-039A Edit this at Wikidata
SATCAT no.11356[1]
Spacecraft properties
SpacecraftProgress (No.106)
Spacecraft typeProgress 7K-TG[2]
ManufacturerNPO Energia
Start of mission
Launch date13 May 1979, 04:17:10 UTC[1]
Launch siteBaikonur, Site 31/6
End of mission
Decay date9 June 1979, 18:52:46 UTC[3]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude190 km[3]
Apogee altitude247 km[3]
Period88.8 minutes[3]
Epoch13 May 1979
Docking with Salyut 6
Docking portAft[3]
Docking date15 May 1979, 06:19:22 UTC
Undocking date8 June 1979, 07:59:41 UTC

Progress 6 (Russian: Прогресс 6) was a Soviet unmanned Progress cargo spacecraft. It which was launched in May 1979 to resupply the Salyut 6 space station.


Progress 6 was a Progress 7K-TG spacecraft. The sixth of forty three to be launched, it had the serial number 106.[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.[6]

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.[6]


Progress 6 launched on 13 May 1979 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U rocket.[2][7]


Progress 6 docked with the aft port of Salyut 6 on 15 May 1979 at 06:19:22 UTC, and was undocked on 8 June 1979 at 07:59:41 UTC.[3][8]


It remained in orbit until 9 June 1979, when it was deorbited. The deorbit burn occurred at 18:52:46 and the mission ended at 19:35 UTC.[3][8]

See also


  1. ^ a b "Launchlog". Jonathan's Space Report. Retrieved 4 December 2020.
  2. ^ a b c "Progress 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 4 December 2020.
  3. ^ a b c d e f g h "Cargo spacecraft "Progress 6"". Manned Astronautics figures and facts. Archived from the original on 9 April 2008.
  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. ^ a b Hall, Rex D.; Shayler, David J. (2003). Soyuz: A Universal Spacecraft. Springer-Praxis. pp. 239–250. ISBN 1-85233-657-9.
  7. ^ "Progress 6". NASA. Retrieved 4 December 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  8. ^ a b "Salyut 6". Astronautix. Archived from the original on 10 December 2016. Retrieved 4 December 2020.