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astronautix.com RD-857
RD-857
RD-857 -

Credit: Dietrich Haeseler. 21,435 bytes. 247 x 341 pixels.

Manufacturer Name: RD-857. Government Designation: 15D12. Designer: Yangel. Developed in: 1963-67. Application: Combined missile (RT-20P) stage 2. Propellants: N2O4/UDMH Thrust(vac): 1,400 kgf. Thrust(vac): 13.73 kN. Isp: 330 sec. Burn time: 215 sec. Mass Engine: 190 kg. Diameter: 0.9 m. Length: 2.1 m. Chambers: 1. Chamber Pressure: 127.50 bar. Oxidizer to Fuel Ratio: 2.60. Country: Ukraine. Status: Out of Production. References: 323 , 344 , 348 . Comments: Designed for second stage of combined missile, only flight tests. Thrust vector control by secondary gas injection into nozzle. Second thrust level at 12.75 kN.
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Last update 12 March 2001.
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