Gross Mass: 10,502,000 kg.
Empty Mass: 839,000 kg. Thrust (vac): 16,384,000 kgf. Isp: 454 sec. Burn time: 263 sec. Propellants: Lox/LH2Isp(sl): 377 sec. Diameter: 21.3 m. Span: 40.9 m. Length: 56.6 m. Country: USA. No Engines: 30. CD ModuleStatus: Study 1963. Comments: Operational date would have been July 1978. SSTO; recoverable; payload 842,000 lbs. .