This page no longer updated from 31 October 2001. Latest version can be found at DAC Helios-1

Gross Mass: 1,660,000 kg. Empty Mass: 149,000 kg. Thrust (vac): 5,397,000 kgf. Isp: 410 sec. Burn time: 113 sec. Propellants: Lox/LH2 Isp(sl): 345 sec. Diameter: 24.4 m. Span: 29.0 m. Length: 16.2 m. Country: USA. No Engines: 4. Chamber/single nozzle Status: Study 1963. Comments: .
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Last update 12 March 2001.
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© Mark Wade, 2001 .