Cargo LV Stage 2
Gross Mass: 227,036 kg (500,528 lb). Empty Mass: 19,343 kg (42,644 lb). Thrust (vac): 2,442.071 kN (548,999 lbf). Isp: 451 sec. Burn time: 370 sec. Propellants: Lox/LH2. Diameter: 8.40 m (27.50 ft). Span: 8.40 m (27.50 ft). Length: 22.74 m (74.60 ft). Country: USA. No Engines: 2. Engine: J-2S. Status: Study 2005.

Trans-lunar injection stage proposed by NASA for Project Constellation exploration of moon and Mars. It would use shuttle external tank tooling. All masses estimated.


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