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Soyuz 7K-OK (1966-1971)
Soyuz 7K-OK(A) drawing.png
Soyuz 7K-OK(A) spacecraft with an active docking unit
Role: Carry cosmonauts Earth orbit and perform orbital and docking manoeuvers.
Crew: 3
Height: 7.95 m
Diameter: 2.72 m
Volume: 9 m³

The manned Soyuz spacecraft can be classified into design generations. Soyuz 1 through Soyuz 11 (1967-1971) were first-generation vehicles, carrying a crew of up to three without spacesuits and distinguished from those following by their bent solar panels and their use of the Igla automatic docking navigation system, which required special radar antennas. The first unmanned test of this version was Cosmos-133, launched on Nov. 28, 1966. This first generation was called Soyuz 7K-OK and encompassed the original Soyuz and Salyut 1 Soyuz. Variations within it were primarily docking fixtures; the first nine examples had no internal hatch and crew transfer had to take place by means of spacewalks, employing spacesuits kept in the orbital module, which functioned as an airlock, as done on Soyuz 4 and 5. This version was used up to 1971.

Unmanned and test missions

Manned missions

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