Nerva 2/NTR
Gross Mass: 158,400 kg (349,200 lb). Empty Mass: 27,000 kg (59,000 lb). Thrust (vac): 333.000 kN (74,861 lbf). Isp: 925 sec. Burn time: 3,575 sec. Propellants: Nuclear/LH2. Diameter: 10.00 m (32.00 ft). Span: 10.00 m (32.00 ft). Length: 47.60 m (156.10 ft). Country: USA. No Engines: 1. Engine: Nerva NTR. Status: Study 1991. Cost $ : 200.000 million. First Flight: 2005.


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