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Soviet expendable carrier rocket
Soyuz/Vostok Function Interim carrier rocket Manufacturer OKB-1 Country of origin Soviet Union Stages Three Mass 4,500 kilograms (9,900 lb) Family R-7 Status Retired Launch sites Baikonur 31/6 Total launches 2 Success(es) 2 First flight 27 December 1965 Last flight 20 July 1966 Carries passengers or cargo US-A No. boosters 4 Powered by 1 RD-107 Maximum thrust 994.3 kilonewtons (223,500 lbf) Specific impulse 315 sec Burn time 118 seconds Propellant RP-1/LOX Powered by 1 RD-108 Maximum thrust 977.7 kilonewtons (219,800 lbf) Specific impulse 315 sec Burn time 292 seconds Propellant RP-1/LOX Powered by 1 RD-0109 Maximum thrust 54.5 kN Burn time 365 seconds Propellant RP-1/LOX[
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The Soyuz/Vostok, also known as just Soyuz or Vostok, or by its GRAU index, 11A510 was an interim expendable carrier rocket used by the Soviet Union in 1965 and 1966. Two were launched with prototype US-A satellites.[1]
The Soyuz/Vostok was launched from Site 31/6 at the Baikonur Cosmodrome. It consisted of the first stage and boosters from a Soyuz rocket combined with the second stage of the Vostok-2, and an unknown third stage.[1] Along with the Voskhod-derived Polyot, it was built as an interim between the cancellation of the UR-200 development programme, and the introduction of the Tsyklon-2, which took over US-A launches once it entered service.
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