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astronautix.com NK-39


Manufacturer Name: NK-39. Government Designation: 11D113. Designer: Kuznetsov. Developed in: 1969-74. Application: N-1F stage 3 (block V). Used on stages: N1F Block V. Used on launch vehicles: N1F, N1F Sr, N1F-L3M. Propellants: Lox/Kerosene Thrust(vac): 41,000 kgf. Thrust(vac): 402.00 kN. Isp: 352 sec. Burn time: 1,200 sec. Mass Engine: 631 kg. Diameter: 1.3 m. Chambers: 1. Chamber Pressure: 98.00 bar. Area Ratio: 114.00. Oxidizer to Fuel Ratio: 2.60. Country: Russia. Status: In Production. References: 351 . Comments: After initial failures of the N-1 Kuznetsov developed modified versions of engines for all 3 stages, with multiple ignition capability and increased operational lifetime. These engines were never flown and were mothballed after the cancellation of the N1.
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Last update 12 March 2001.
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