This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com 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.
Back to Index
Last update 12 March 2001.
Definitions of Technical Terms.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .