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Soyuz 8

Crewed flight of the Soyuz programme


Crewed flight of the Soyuz programme

FieldValue
nameSoyuz 8
imageThe Soviet Union 1969 CPA 3811 stamp (Vladimir Shatalov and Aleksei Yeliseyev (Soyuz 8)).png
image_captionShatalov and Yeliseyev on 1969 commemorative stamp of Soviet Union
image_size290px
mission_typeTest flight
operatorSoviet space program
COSPAR_ID1969-087A
SATCAT04126
mission_duration4 days 22 hours 50 minutes 49 seconds
orbits_completed80
spacecraftSoyuz 7K-OK No.16
spacecraft_typeSoyuz 7K-OK (passive)
manufacturerExperimental Design Bureau (OKB-1)
launch_mass6646 kg
landing_mass1200 kg
launch_date13 October 1969, 10:19:09 GMT
launch_rocketSoyuz
launch_siteBaikonur, Site 31/6
landing_date18 October 1969, 09:09:58 GMT
landing_siteKazakh Steppe, Kazakhstan
crew_size2
crew_membersVladimir Shatalov
Aleksei Yeliseyev
crew_callsignГранит (Granit - "Granite")
orbit_referenceGeocentric orbit
orbit_regimeLow Earth orbit
orbit_periapsis201.0 km
orbit_apoapsis227.0 km
orbit_inclination51.65°
orbit_period88.72 minutes
apsisgee
programmeSoyuz programme
previous_missionSoyuz 7
next_missionSoyuz 9

Aleksei Yeliseyev

Soyuz 8 (, Union 8) was part of an October, 1969, joint mission with Soyuz 6 and Soyuz 7 that saw three Soyuz spacecraft in orbit together at the same time, carrying a total of seven cosmonauts.

The crew consisted of commander Vladimir Shatalov and flight engineer Aleksei Yeliseyev, whose mission was to dock with Soyuz 7 and transfer crew, as the Soyuz 4 (involving, among others, these two cosmonauts) and Soyuz 5 missions did. Soyuz 6 was to film the operation from nearby.

However, this objective was not achieved due to equipment failures. Soviet sources were later to claim that no docking had been intended, but this seems unlikely, given the docking adapters carried by the spacecraft, and the fact that both Shatalov and Yeliseyev were veterans of the previous successful docking mission. This was the last time that the Soviet-crewed Moon landing hardware was tested in orbit, and the failure seems to have been one of the final nails in the coffin of the programme.

The radio call sign of the spacecraft was Granit, meaning Granite. This word is apparently used as the name of a reactive or defensive squadron in Soviet military training, and, just like the Soyuz 5, it was constructed and its crew was trained to be the responsive (not entirely passive) or female spacecraft in its docking. Giving military names to the spacecraft was probably a response to an appeal that the commander of the Soyuz 5 made. Further, the word was probably chosen as it begins with a letter following that sequence starting with Antey (meaning Antaeus) and Buran (meaning Blizzard); Г (G) is the fourth letter of the Russian alphabet.

Crew

Backup Crew

Mission

The mission objectives included:

  • checkout and flight test of spaceborne systems and the modified structure of the Soyuz craft,
  • further improvement of the control, orientation, and orbital stabilisation systems and navigation aids,
  • debugging the piloting systems by orbital maneuvering of the spaceships in relation to one another,
  • testing of a system for control of the simultaneous flight of three spacecraft,
  • scientific observations and photographing of geological-geographical subjects and exploration of the Earth's atmosphere,
  • studying circumterrestrial space,
  • conducting experiments of engineering research and biomedical engineering importance.

Mission parameters

  • Mass: 6646 kg
  • Perigee: 201.0 km
  • Apogee: 227.0 km
  • Inclination: 51.65°
  • Period: 88.72 minutes

Return

Stable two-way radio communication was maintained between the spaceships and the ground stations, and TV coverage was broadcast from the ships during flight. Soyuz 8 was a part of the group flight of Soyuz 6, 7, and 8, and resembled Soyuz 6 in that it was an active ship designed to move toward the passive Soyuz 7. Soyuz 8 was equipped with full docking apparatus and for some hours flew very close to Soyuz 7. No docking occurred. The flight was safely terminated in Kazakh Steppe, in Kazakhstan.

References

References

  1. [https://www.russianspaceweb.com/soyuz6-soyuz7-soyuz8.html Soyuz spacecraft conduct triple mission] ''www.russianspaceweb.com'', accessed 27 December 2022
  2. (28 September 2020). "Launchlog". Jonathan's Space Report.
  3. "Baikonur LC31". Encyclopedia Astronautica.
  4. (14 May 2020). "Display: Soyuz 8 - 1969-087A". NASA.
  5. (14 May 2020). "Trajectory: Soyuz 8 1969-087A". NASA.
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