|Mission type||Salyut 6 resupply|
|Mission duration||24 days|
|Spacecraft||Progress s/n 104|
|Spacecraft type||Progress 7K-TG|
|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|
|Rocket||Soyuz-U s/n Ye15000-162|
|Launch site||Baikonur, Site 31/6|
|End of mission|
|Decay date||5 April 1979, 01:04 UTC|
|Perigee altitude||189 km|
|Apogee altitude||256 km|
|Epoch||12 March 1979|
|Docking with Salyut 6|
|Docking date||14 March 1979, 07:19:21 UTC|
|Undocking date||3 April 1979, 16:10:00 UTC|
|Time docked||20.4 days|
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.
Progress 5 was a Progress 7K-TG spacecraft. The fifth of forty three to be launched, it had the serial number 104. 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.
Progress 5 docked with Salyut 6 on 14 March 1979 at 07:19:21 UTC.
It remained in orbit until 5 April 1979, when it was deorbited. The deorbit burn occurred at 01:04 UTC.