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Model: VTOHL 9t. Gross Mass: 687,503 kg (1,515,684 lb). Empty Mass: 71,901 kg (158,514 lb). Thrust (vac): 11,186.092 kN (2,514,734 lbf). Isp: 467 sec. Burn time: 500 sec. Propellants: Lox/LH2. Isp(sl): 385 sec. Diameter: 36.00 m (118.00 ft). Span: 36.00 m (118.00 ft). Length: 58.50 m (191.90 ft). Country: USA. No Engines: 3. Motor: SSME Plus. Status: Study 1978. Cost $ : 20.000 million. First Flight: 1995.



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