R-31 Stage 1

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Model: R-31 Stage 1. Gross Mass: 17,500 kg (38,500 lb). Thrust (vac): 578.000 kN (129,939 lbf). Burn time: 84 sec. Propellants: Solid. Diameter: 1.54 m (5.05 ft). Length: 6.30 m (20.60 ft). Country: Russia. Status: Retired 1990. First Flight: 1974. Last Flight: 1979. No Launched: 6. Used on Launch Vehicles: R-31. 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 - 2008 except where otherwise noted.