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Viking 4B
Part of Viking 2 Family
SEP N2O4/UDMH rocket engine. Used on Ariane 4. First flight 1984.

Number: 133 . Thrust: 805.00 kN (180,971 lbf). Unfuelled mass: 850 kg (1,870 lb). Specific impulse: 296 s. Specific impulse sea level: 210 s. Burn time: 125 s. Height: 3.51 m (11.51 ft). Diameter: 2.60 m (8.50 ft).

Thrust (sl): 571.100 kN (128,388 lbf). Thrust (sl): 58,237 kgf. Engine: 850 kg (1,870 lb). Chamber Pressure: 58.50 bar. Area Ratio: 30.8. Thrust to Weight Ratio: 99.3791224512388. Oxidizer to Fuel Ratio: 1.7. Coefficient of Thrust vacuum: 1.84359746305747. Coefficient of Thrust sea level: 1.31710173656174.

Family: Storable liquid. Country: France. Launch Vehicles: Ariane 2/3, Ariane 4, Ariane 44LP, Ariane 44L, Ariane 42P, Ariane 44P, Ariane 42L. Propellants: N2O4/UDMH. Stages: Ariane 2-2.



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