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Model: VTOHL 45t. Gross Mass: 1,158,192 kg (2,553,376 lb). Empty Mass: 96,650 kg (213,070 lb). Thrust (vac): 18,643.471 kN (4,191,219 lbf). Isp: 467 sec. Burn time: 500 sec. Propellants: Lox/LH2. Isp(sl): 385 sec. Diameter: 34.30 m (112.50 ft). Span: 34.30 m (112.50 ft). Length: 53.50 m (175.50 ft). Country: USA. No Engines: 5. Motor: SSME Plus. Status: Study 1978. Cost $ : 30.000 million. First Flight: 1995.



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