This page no longer updated from 31 October 2001. Latest version can be found at X-30

Gross Mass: 140,000 kg. Empty Mass: 60,000 kg. Thrust (vac): 140,000 kgf. Isp: 1,550 sec. Burn time: 886 sec. Propellants: Air/Slush LH2 Isp(sl): 1,550 sec. Diameter: 16.0 m. Span: 36.0 m. Length: 80.0 m. Country: USA. No Engines: 1. Scramjet Status: Devel. Other designations: NASP (National Aerospace Plane); Orient Express.
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Last update 12 March 2001.
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© Mark Wade, 2001 .