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Nerva 2

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Status: Study 1991. Thrust: 13,693.80 kN (3,078,489 lbf). Gross mass: 872,878 kg (1,924,366 lb). Height: 57.00 m (187.00 ft). Diameter: 10.00 m (32.00 ft).

Flyaway Unit Cost 1985$: 266.660 million.

Stage Data - Nerva 2

• Stage 0. 2 x Titan USRM. Gross Mass: 357,239 kg (787,577 lb). Empty Mass: 52,040 kg (114,720 lb). Thrust (vac): 7,560.681 kN (1,699,709 lbf). Isp: 286 sec. Burn time: 140 sec. Isp(sl): 259 sec. Diameter: 3.20 m (10.40 ft). Span: 3.20 m (10.40 ft). Length: 33.54 m (110.03 ft). Propellants: Solid. No Engines: 1. Engine: USRM. Other designations: Upgraded Solid Rocket Motor. Status: In production.

• Stage 1. 1 x 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. Diameter: 10.00 m (32.00 ft). Span: 10.00 m (32.00 ft). Length: 47.60 m (156.10 ft). Propellants: Nuclear/LH2. No Engines: 1. Engine: Nerva NTR. Status: Study 1991.