Progress 8

Progress 8 (Russian: Прогресс 8), was a Soviet uncrewed Progress cargo spacecraft which was launched in 1980 to resupply the Salyut 6 space station.

For the UK educational measure, see Progress 8 benchmark.

Progress 8
A Progress 7K-TG spacecraft
Mission typeSalyut 6 resupply
OperatorOKB-1
COSPAR ID1980-024A
SATCAT no.11743 [1]
Mission duration30 days
Spacecraft properties
SpacecraftProgress s/n 108
Spacecraft typeProgress 7K-TG
ManufacturerNPO Energia
Launch mass7020 kg
Dry mass6520 kg
Payload mass2500 kg
Dimensions7.48 m in length and
2.72 m in diameter
Start of mission
Launch date27 March 1980, 18:53:31 UTC
RocketSoyuz-U s/n Zh15000-200
Launch siteBaikonur, 31/6
ContractorOKB-1
End of mission
DisposalDeorbited
Decay date26 April 1980, 06:54 UTC [2]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude154.0 km
Apogee altitude186.0 km
Inclination51.66°
Period87.80 minutes
Epoch27 March 1980
Docking with Salyut 6
Docking portAft [3]
Docking date29 March 1980, 20:01:00 UTC
Undocking date25 April 1980, 08:04:00 UTC
Time docked26.5 days
Cargo
Mass2500 kg
 

Spacecraft

Progress 8 was a Progress 7K-TG spacecraft. The eighth of forty three to be launched, it had the serial number 108.[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]

Launch

Progress 8 launched on 27 March 1980 from the Baikonur Cosmodrome in the Kazakh Soviet Socialist Republic. It used a Soyuz-U rocket. [7]

Docking

Progress 8 docked with Salyut 6 on 29 March 1980 at 20:01 UTC.[8]

See also

References
  1. "Launchlog". Jonathan's Space Report. Retrieved 18 June 2019.
  2. "Progress 8". NASA. Retrieved 18 June 2019. Public Domain This article incorporates text from this source, which is in the public domain.
  3. "Cargo spacecraft "Progress-8"". Manned Astronautics figures and facts. Archived from the original on 11 September 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 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 18 June 2019.
  8. "Salyut 6". Astronautix. Archived from the original on 10 December 2016. Retrieved 18 June 2019.
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