Progress 7
{{Short description|Soviet unmanned Progress cargo spacecraft}}
{{Use British English|date=November 2020}}
{{Use dmy dates|date=November 2020}}
{{Infobox spaceflight
| name = Progress 7
| image = Progress drawing.svg
| image_caption = A Progress 7K-TG spacecraft
| mission_type = Salyut 6 resupply
| COSPAR_ID = 1979-059A
| SATCAT = 11421{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launchlog|work=Jonathan's Space Report|access-date=4 December 2020}}
| spacecraft = Progress (No.107)
| spacecraft_type = Progress 7K-TG{{cite web|url=https://space.skyrocket.de/doc_sdat/progress.htm|title=Progress 1 - 42 (11F615A15, 7K-TG)|work=Gunter's Space Page|access-date=4 December 2020}}
| manufacturer = NPO Energia
| launch_date = 28 June 1979, 09:25:11 UTC
| launch_rocket = Soyuz-U
| launch_site = Baikonur, Site 31/6
| docking =
{{Infobox spaceflight/Dock
| docking_target = Salyut 6
| docking_type = dock
| docking_date = 30 June 1979, 11:18:32 UTC
| undocking_date = 18 July 1979, 03:49:55 UTC
}}
| disposal_type = Deorbited
| decay_date = 20 July 1979, 01:57:30 UTC
| orbit_epoch = 28 June 1979
| orbit_reference = Geocentric
| orbit_regime = Low Earth
| apsis = gee
| programme = Progress (spacecraft)
| previous_mission = Progress 6
| next_mission = Progress 8
}}
Progress 7 ({{Langx|ru|Прогресс 7|italic=yes}}) was a Soviet unmanned Progress cargo spacecraft, which was launched in June 1979 to resupply the Salyut 6 space station.
Spacecraft
Progress 7 was a Progress 7K-TG spacecraft. The seventh of forty three to be launched, it had the serial number 107.{{cite web|url=http://space.skyrocket.de/doc_sdat/progress.htm |title=Progress 1 - 42 (11F615A15, 7K-TG)|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=26 November 2010}}{{cite web|url=http://planet4589.org/space/log/launchlog.txt |title=Launch Log|last=McDowell|first=Jonathan|work=Jonathan's Space Page|access-date=26 November 2010}} 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 {{convert|6520|kg}}, which increased to around {{convert|7020|kg}} when fully fuelled. It measured {{convert|7.48|m}} in length, and {{convert|2.72|m}} in diameter. Each spacecraft could accommodate up to {{convert|2500|kg}} 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.{{cite book|last1=Hall|first1=Rex D.|last2=Shayler|first2=David J.|title=Soyuz: A Universal Spacecraft|year=2003 |publisher=Springer-Praxis|isbn=1-85233-657-9|pages=239–250}}
Launch
Progress 7 launched on 28 June 1979 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U rocket.{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1979-059A|title=Progress 7|work=NASA|access-date=4 December 2020}} {{PD-notice}}
Docking
Progress 7 docked with the aft port of Salyut 6 on 30 June 1979 at 11:18:32 UTC, and was undocked on 18 July 1979 at 03:49:55 UTC.{{cite web|url=http://www.astronautix.com/s/salyut6.html|archive-url=https://web.archive.org/web/20161210174048/http://www.astronautix.com/s/salyut6.html|url-status=dead|archive-date=10 December 2016|title=Salyut 6|work=Astronautix|access-date=4 December 2020}}
Decay
See also
{{Portal|Spaceflight}}
References
{{Reflist}}
{{Progress spacecraft}}
{{Orbital launches in 1979}}
Category:Progress (spacecraft) missions
Category:1979 in the Soviet Union
Category:Spacecraft launched in 1979
Category:Spacecraft which reentered in 1979
Category:Spacecraft launched by Soyuz-U rockets
{{USSR-spacecraft-stub}}