This page no longer updated from 31 October 2001. Latest version can be found at Saturn MS-II-4(S)B

Gross Mass: 494,100 kg. Empty Mass: 42,300 kg. Thrust (vac): 527,100 kgf. Isp: 421 sec. Burn time: 355 sec. Propellants: Lox/LH2 Isp(sl): 200 sec. Diameter: 10.1 m. Span: 10.1 m. Length: 24.8 m. Country: USA. No Engines: 5. J-2 Status: Study Boeing 1967. Comments: Standard S-II but with structural strength increased from 86% to 502% depending on station, resulting in 8.6% increase in empty weight.
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Last update 12 March 2001.
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© Mark Wade, 2001 .