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Manufacturer Name: KTDU-425. Government Designation: 11D425. Designer: Isayev. Developed in: 1970-73. Application: Mars 2 and 3 maneuver engine. Used on spacecraft: Mars M-71. Propellants: N2O4/UDMH Thrust(vac): 1,922 kgf. Thrust(vac): 18.85 kN. Isp: 312 sec. Burn time: 560 sec. Chambers: 1. Chamber Pressure: 133.20 bar. Oxidizer to Fuel Ratio: 1.90. Country: Russia. Status: Out of Production. References: 329 , 344 . Comments: Pump-fed engine. Could be throttled to 7.05 kN / 9.5 MPa / 2850 m/s. . Chamber pressure 133,2 - 95 bar.
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Last update 12 March 2001.
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