R-21-1

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Model: R-21-1. Gross Mass: 16,600 kg (36,500 lb). Propellants: N2O4/UDMH. Diameter: 1.30 m (4.20 ft). Length: 12.00 m (39.00 ft). Country: Russia. No Engines: 1. Motor: RD R-21. Status: Retired 1989. Used as: R-21. Release conditions: SKB-385. Used on Launch Vehicles: R-21. 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.