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KTDU-53
Isayev Nitric acid/UDMH rocket engine. Zond 4-7 maneuvering engine. Out of Production. Spacecraft maneuvering engine, derivative of KTDU-35 without back-up engine.

AKA: S5.53. Status: Out of Production. Date: 1962-67. Thrust: 4.09 kN (919 lbf). Specific impulse: 280 s. Height: 1.14 m (3.73 ft). Diameter: 2.50 m (8.20 ft).

Chamber Pressure: 39.20 bar. Propellant Formulation: AK27I/UDMH. Oxidizer to Fuel Ratio: 1.85.



Family: Storable liquid. Country: Russia. Spacecraft: Soyuz 7K-L1, Soyuz 7K-L1 PAO, Soyuz 7K-L1A, Soyuz 7K-L1E. Propellants: Nitric acid/UDMH. Agency: Isayev bureau. Bibliography: 321.

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