This page no longer updated from 31 October 2001. Latest version can be found at KRD-61

Manufacturer Name: KRD-61. Other Designations: S5.61. Designer: Isayev. Developed in: 1968-70. Application: Luna Ye-8. Used on spacecraft: Luna Ye-8. Propellants: N2O4/UDMH Thrust(vac): 1,918 kgf. Thrust(vac): 18.80 kN. Isp: 313 sec. Burn time: 53 sec. Mass Engine: 42 kg. Diameter: 0.5 m. Length: 0.7 m. Chambers: 1. Chamber Pressure: 92.20 bar. Oxidizer to Fuel Ratio: 1.84. Country: Russia. Status: Out of Production. First Flight: 1969. References: 225 , 321 , 329 , 342 . Comments: Spacecraft maneuvering engine for ascent stage of Luna moon sample return missions.
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Last update 12 March 2001.
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© Mark Wade, 2001 .