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NK-33 -

Credit: Karl Dodenhoff. 23,908 bytes. 176 x 329 pixels.

Manufacturer Name: NK-33. Government Designation: 11D111. Designer: Kuznetsov. Developed in: 1970-74. Application: N-1F stage 1 (block A). Used on stages: Kistler Stage 1, N1F Block A. Used on launch vehicles: Kistler, N1F, N1F Sr, N1F-L3M. Propellants: Lox/Kerosene Thrust(vac): 167,000 kgf. Thrust(vac): 1,638.00 kN. Isp: 331 sec. Isp (sea level): 297 sec. Burn time: 600 sec. Mass Engine: 1,222 kg. Diameter: 1.5 m. Length: 3.7 m. Chambers: 1. Chamber Pressure: 145.70 bar. Area Ratio: 27.00. Oxidizer to Fuel Ratio: 2.80. Country: Russia. Status: In Production. References: 351 .

After initial failures of N1 modified engines with multiple ignition capability and increased life were developed. NK-33 was tested at thrust of up to 204 t, variations of components ratio up to 20% and total burning time up to 1200 sec. Mothballed, never flown until selected by Kistler for their commercial launch vehicle in 1996.

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Last update 12 March 2001.
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