This page no longer updated from 31 October 2001. Latest version can be found at Jarvis-3

Gross Mass: 13,400 kg. Empty Mass: 2,000 kg. Thrust (vac): 400 kgf. Isp: 312 sec. Burn time: 8,100 sec. Propellants: N2O4/MMH Isp(sl): 0 sec. Diameter: 5.2 m. Span: 5.2 m. Length: 3.0 m. Country: USA. No Engines: 8. R-4D Status: Study.
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Last update 12 March 2001.
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© Mark Wade, 2001 .