R-7 8K71-1 R-7 aft end Credit - © Mark Wade Gross Mass: 95,300 kg (210,100 lb). Empty Mass: 7,500 kg (16,500 lb). Thrust (vac): 912.000 kN (205,025 lbf). Isp: 308 sec. Burn time: 330 sec. Propellants: Lox/Kerosene. Isp(sl): 241 sec. Diameter: 2.99 m (9.80 ft). Span: 2.99 m (9.80 ft). Length: 28.00 m (91.00 ft). Country: Russia. No Engines: 1. Engine: RD-108-8D75. Cost $ : 13.000 million. First Flight: 1957. Last Flight: 1961. No Launched: 31. No Failed: 22. Used on Launch Vehicles: R-7.                   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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