This page no longer updated from 31 October 2001. Latest version can be found at SLS Stage B

Gross Mass: 83,100 kg. Empty Mass: 6,000 kg. Thrust (vac): 90,686 kgf. Isp: 425 sec. Burn time: 345 sec. Propellants: Lox/LH2 Diameter: 7.6 m. Span: 7.6 m. Length: 25.5 m. Country: USA. No Engines: 1. J-2 Status: Study 1961. Comments: Tranlunar injection stage for Project Lunex. Empty mass estimated.
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Last update 12 March 2001.
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© Mark Wade, 2001 .