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Manufacturer Name: KTDU-417. Government Designation: 11D417. Other Designations: KRD-417. Designer: Isayev. Application: Luna 15-24 descent stage. Used on spacecraft: Luna Ye-8, Luna Ye-8-5, Luna Ye-8-5M, Luna Ye-8-LS. Propellants: Nitric acid/UDMH Thrust(vac): 1,929 kgf. Thrust(vac): 18.92 kN. Isp: 314 sec. Burn time: 650 sec. Mass Engine: 81 kg. Diameter: 0.7 m. Length: 0.8 m. Chambers: 1 + 2. Chamber Pressure: 83.00 bar. Oxidizer to Fuel Ratio: 1.80. Country: Russia. Status: Out of Production. References: 225 , 321 , 329 , 342 , 344 . Comments: Comprises turbopump-fed high-thrust engine with data given in this entry, plus low-thrust engine, see entry KTDU-417-B. Eleven ignitions for lunar orbit insertion and orbit corrections. Two different oxidizers named.
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Last update 12 March 2001.
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