AKA: Nerva 2. Status: Developed 1950-74. Thrust: 867.40 kN (194,999 lbf). Unfuelled mass: 11,860 kg (26,140 lb). Specific impulse: 825 s. Specific impulse sea level: 380 s. Burn time: 1,200 s. Height: 4.24 m (13.91 ft). Diameter: 10.55 m (34.61 ft).
Thrust (sl): 399.500 kN (89,811 lbf). Thrust (sl): 40,741 kgf. Engine: 11,860 kg (26,140 lb). Thrust to Weight Ratio: 7.45792580101181.