This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com
Gross Mass: 29,500 kg.
Empty Mass: 6,700 kg. Thrust (vac): 39,400 kgf. Isp: 316 sec. Burn time: 180 sec. Propellants: Lox/Kerosene Isp(sl): 220 sec. Diameter: 3.1 m. Span: 10.4 m. Length: 21.9 m. Country: USA. No Engines: 1. RS-56-OSA Status: Devel. Comments: Original design for two-stage reusable space launcher. Abandoned in favour of more modest X-34A technology demonstrator after industry refused to make significant investments in the concept.
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Last update 12 March 2001.
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© Mark Wade, 2001 .