This page no longer updated from 31 October 2001. Latest version can be found at X-33

Gross Mass: 123,800 kg. Empty Mass: 28,600 kg. Thrust (vac): 233,000 kgf. Isp: 439 sec. Burn time: 886 sec. Propellants: Lox/LH2 Isp(sl): 339 sec. Diameter: 20.7 m. Span: 20.7 m. Length: 20.4 m. Country: USA. No Engines: 2. XRS-2200 Status: Development.
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Last update 12 March 2001.
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© Mark Wade, 2001 .