R-7A 8K74-0 R-7 aft end Credit - © Mark Wade Gross Mass: 42,800 kg (94,300 lb). Empty Mass: 3,200 kg (7,000 lb). Thrust (vac): 995.300 kN (223,752 lbf). Isp: 313 sec. Burn time: 120 sec. Propellants: Lox/Kerosene. Isp(sl): 256 sec. Diameter: 2.68 m (8.79 ft). Span: 2.68 m (8.79 ft). Length: 19.00 m (62.00 ft). Country: Russia. No Engines: 1. Engine: RD-107-8D74K. Status: Out of production. Cost $ : 5.000 million. First Flight: 1959. Last Flight: 1967. No Launched: 84. Used on Launch Vehicles: R-7A.                   Contact us with any corrections, additions, or comments. Conditions for use of drawings, pictures, or other materials from this site.. To contact astronauts or cosmonauts. © Mark Wade, 1997 - 2007 except where otherwise noted.

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