This page no longer updated from 31 October 2001. Latest version can be found at RD-855

Manufacturer Name: RD-855. Other Designations: D-68M. Designer: Yangel. Developed in: 1962-67. Application: Tsyklon stage 1 attitude control engine. Propellants: N2O4/UDMH Thrust(vac): 29,103 kgf. Thrust(vac): 285.40 kN. Isp: 292 sec. Isp (sea level): 254 sec. Burn time: 127 sec. Mass Engine: 320 kg. Diameter: 3.8 m. Length: 1.7 m. Chambers: 4. Chamber Pressure: 65.70 bar. Oxidizer to Fuel Ratio: 1.97. Country: Ukraine. Status: Out of Production. References: 348 . Comments: 285.4 kN sea-level thrust.
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Last update 12 March 2001.
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© Mark Wade, 2001 .