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KRD-61
Isayev N2O4/UDMH rocket engine. Luna Ye-8. Out of Production. Spacecraft maneuvering engine for ascent stage of Luna moon sample return missions. First flight 1969.

AKA: S5.61. Status: Out of Production. Date: 1968-70. Thrust: 18.80 kN (4,226 lbf). Unfuelled mass: 42 kg (92 lb). Specific impulse: 313 s. Burn time: 53 s. Height: 0.71 m (2.34 ft). Diameter: 0.55 m (1.79 ft).

Engine: 42 kg (92 lb). Chamber Pressure: 92.20 bar. Thrust to Weight Ratio: 45.88. Oxidizer to Fuel Ratio: 1.84. Coefficient of Thrust sea level: 0.



Family: Storable liquid. Country: Russia. Propellants: N2O4/UDMH. Agency: Isayev bureau. Bibliography: 225, 321, 329, 342.

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