Soyuz 27
OperatorOKB-1
Cospar id1978-003A
Satcat10560
Mission duration65 days
Orbits completed1025
SpacecraftSoyuz s/n 44
Soyuz 7K-TSoyuz s/n 44
ManufacturerNPO Energia
Launch mass6800 kg
Launch date10 January 1978, 12:26:00 UTC
Launch rocketSoyuz-U s/n D15000-106
Launch siteBaikonur, Site 1/5[1]
Launch contractorOKB-1
Landing date16 March 1978, 11:18:47 UTC
Landing site310 km at west of Tselinograd
Crew launchingVladimir Dzhanibekov
Oleg Makarov
Crew landingYuri Romanenko
Georgy Grechko
Crew callsignПамир Pamir
Pamir Mountains
Orbit referenceGeocentric
Orbit regimeLow Earth
Orbit periapsis198.9 km
Orbit apoapsis253.8 km
Orbit inclination51.65°
Orbit period88.73 minutes
Apsisgee
Previous missionSoyuz 26
Next missionSoyuz 28
ProgrammeSoyuz programme
(Crewed missions)
Soyuz 27
Docking targetSalyut 6
dock11 January 1978, 14:05:54 UTC
Undocking date16 March 1978, 07:58:00 UTC

Soyuz 27 (Russian: Союз 27, Union 27) was a 1978 Soviet crewed spacecraft which flew to the orbiting Salyut 6 space station, during the mission EP-1.[2] It was the third crewed flight to the station, the second successful docking and the first visitation mission. Once docked, it marked the first time that three spacecraft were docked together.

The main function of the EP-1 mission was to swap Soyuz craft with the orbiting crew, in so doing freeing a docking port for a forthcoming supply tanker. Cosmonauts Vladimir Dzhanibekov and Oleg Makarov returned to Earth in the Soyuz 26 spacecraft after spending five days on the station. The descent module is displayed at the Sergei Pavlovich Korolyov Museum of Cosmonautics in Zhytomyr, Ukraine.[3]

Mission parameters

  • Mass: 6,800 kilograms (15,000 lb)
  • Perigee: 198.9 kilometres (123.6 mi)
  • Apogee: 253.8 kilometres (157.7 mi)
  • Inclination: 51.65°
  • Period: 88.73 minutes

References

  1. ^ "Baikonur LC1". Encyclopedia Astronautica. Archived from the original on 2009-04-15. Retrieved 2009-03-04.
  2. ^ Becker, Joachim. "Spaceflight mission report: Soyuz 27". Spacefacts.de. Retrieved 10 August 2017.
  3. ^ "Подорож у минуле" [Journey to the past] (in Russian). S.P. Korolev Cosmonautics Museum of the Zhytomyr Regional Council. Sergei Pavlovich Korolyov Museum of Cosmonautics. 2013. Retrieved 2016-07-17.