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astronautix.com RD-856


Manufacturer Name: RD-856. Other Designations: D-69M. Designer: Yangel. Developed in: 1962-67. Application: Tsyklon stage 2 attitude control engine. Propellants: N2O4/UDMH Thrust(vac): 5,530 kgf. Thrust(vac): 54.23 kN. Isp: 281 sec. Burn time: 163 sec. Mass Engine: 113 kg. Diameter: 3.7 m. Length: 1.1 m. Chambers: 4. Chamber Pressure: 71.60 bar. Oxidizer to Fuel Ratio: 1.98. Country: Ukraine. Status: Out of Production. References: 348 .
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Last update 12 March 2001.
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