This page no longer updated from 31 October 2001. Latest version can be found at Energia EUS

Gross Mass: 77,000 kg. Empty Mass: 7,000 kg. Thrust (vac): 200,071 kgf. Isp: 455 sec. Burn time: 160 sec. Propellants: Lox/LH2 Isp(sl): 352 sec. Diameter: 5.7 m. Span: 5.7 m. Length: 16.5 m. Country: Russia. No Engines: 1. RD-0120 Status: Dev. Other designations: Cryogenic Upper Stage.
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Last update 12 March 2001.
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© Mark Wade, 2001 .