This page no longer updated from 31 October 2001. Latest version can be found at DAC Helios-2

Gross Mass: 1,070,000 kg. Empty Mass: 214,000 kg. Thrust (vac): 1,828,000 kgf. Isp: 850 sec. Burn time: 392 sec. Propellants: Nuclear/LH2 Diameter: 21.3 m. Span: 38.1 m. Length: 27.4 m. Country: USA. No Engines: 2. NERVA 1mlbf Status: Study 1963. Comments: .
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Last update 12 March 2001.
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© Mark Wade, 2001 .