Progress 5

Progress 5

A Progress 7K-TG spacecraft
Mission type	Salyut 6 resupply
Operator	OKB-1
COSPAR ID	1979-022A
SATCAT no.	11292[1]
Mission duration	24 days
Spacecraft properties
Spacecraft	Progress s/n 104
Spacecraft type	Progress 7K-TG[2]
Manufacturer	NPO Energia
Launch mass	7020 kg
Dry mass	6520 kg
Payload mass	2500 kg
Dimensions	7.48 m in length and 2.72 m in diameter
Start of mission
Launch date	12 March 1979, 05:47:28 UTC[1]
Rocket	Soyuz-U s/n Ye15000-162
Launch site	Baikonur, Site 31/6
Contractor	OKB-1
End of mission
Disposal	Deorbited
Decay date	5 April 1979, 01:04 UTC[3]
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	189 km
Apogee altitude	256 km
Inclination	51.66°
Period	88.8 minutes
Epoch	12 March 1979
Docking with Salyut 6
Docking port	Aft[4]
Docking date	14 March 1979, 07:19:21 UTC
Undocking date	3 April 1979, 16:10:00 UTC
Time docked	20.4 days
Cargo
Mass	2500 kg
Progress (spacecraft)

Progress 5 (Russian: Прогресс 5), was a Soviet unmanned Progress cargo spacecraft which was launched in 1979 to resupply the Salyut 6 space station. Served as a receptacle for contaminated fuel from the damaged Salyut 6 propulsion system.

Spacecraft

Progress 5 was a Progress 7K-TG spacecraft. The fifth of forty three to be launched, it had the serial number 104.^[5][6] 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.^[7]

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.^[7]

Launch

Progress 5 launched on 12 March 1979 from the Baikonur Cosmodrome in the Kazakh Soviet Socialist Republic. It used a Soyuz-U rocket.^[2]

Docking

Progress 5 docked with Salyut 6 on 14 March 1979 at 07:19:21 UTC.^[8]

Decay

It remained in orbit until 5 April 1979, when it was deorbited. The deorbit burn occurred at 01:04 UTC.

See also

• 1979 in spaceflight
• List of Progress missions
• List of uncrewed spaceflights to Salyut space stations

References

1. "Launchlog". Jonathan's Space Report. Retrieved 23 December 2017.
2. "Progress 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 23 December 2017.
3. "Progress 5". NASA. Retrieved 23 December 2017. This article incorporates text from this source, which is in the public domain.
4. "Cargo spacecraft "Progress-5"". Manned Astronautics figures and facts. Archived from the original on 10 September 2007.
5. Krebs, Gunter. "Progress 1 - 42 (11F615A15, 7K-TG)". Gunter's Space Page. Retrieved 26 November 2010.
6. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 26 November 2010.
7. Hall, Rex D.; Shayler, David J. (2003). Soyuz: A Universal Spacecraft. Springer-Praxis. pp. 239–250. ISBN 1-85233-657-9.
8. "Salyut 6". Astronautix. Archived from the original on 10 December 2016. Retrieved 23 December 2017.