This page no longer updated from 31 October 2001. Latest version can be found at UR-100N Stage 1N

Gross Mass: 77,150 kg. Empty Mass: 5,695 kg. Thrust (vac): 181,373 kgf. Isp: 310 sec. Burn time: 121 sec. Propellants: N2O4/UDMH Isp(sl): 285 sec. Diameter: 2.5 m. Span: 2.5 m. Length: 17.2 m. Country: Russia. No Engines: 4. RD-0232 Status: Hardware.
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Last update 12 March 2001.
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© Mark Wade, 2001 .