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NK-9
Kuznetsov LOx/Kerosene rocket engine. R-9, GR-1 stage 1. Reached phase of stand testing in 1965, but then RD-111 selected. Later planned for 1st Stage of GR-1, but that rocket also cancelled.

Date: 1959-65. Thrust: 441.30 kN (99,208 lbf). Specific impulse: 327 s. Specific impulse sea level: 280 s.

Thrust (sl): 360.390 kN (81,019 lbf). Thrust (sl): 36,750 kgf. Propellant Formulation: Lox/RG-1.



Subtopics

NK-9V Kuznetsov LOx/Kerosene rocket engine. N-1 stage 2 / N-1 stage 3 / R-9 Stage 2. Developed for 2nd stage of the R-9 ICBM (alternative to RD-111 engine by OKB-456). NK-9 with increased expansion ratio. First flight 1965.

NK-19 Kuznetsov LOx/Kerosene rocket engine. N-1 stage 4 (Block G). Development ended 1964. Based on NK-9 engine. Originally developed for the modernized second stage of the R-9 (abandoned). Also to have been used on GR-1 / 8K713 Stage 2. First flight 1969.

NK-21 Kuznetsov LOx/Kerosene rocket engine. N-1 stage 3 (block V). Out of production. Based on NK-9 engine. Propellants kerosene T-1 / LOX. 4 engines used in N-1 stage 3 (block V). Used on N1 launch vehicle. First flight 1969.

11D53F Kuznetsov LOx/Kerosene rocket engine. N1F 1965 - V. Study 1965. As per N1 improvement study, 1965. Engine thrust increased and stretched propellant tanks resulting in 20% longer burn time.

11D53M Kuznetsov LOx/Kerosene rocket engine. N1M 1965 - V. Study 1965. As per N1 improvement study, 1965. Further increase in thrust of Block V engines. Used on N-IM 1965 launch vehicle.

NK-31 Kuznetsov LOx/Kerosene rocket engine. Upgraded version of engines for N-1 stage 4, with multiple ignition capability and increased operational lifetime. Mothballed in 1974. Proposed for Black Colt launch vehicle in 1993.

NK-39 Kuznetsov LOx/Kerosene rocket engine. N-1F stage 3 (Block V). Development ended 1971. Modified version of original engine with multiple ignition capability. Never flown and mothballed after the cancellation of the N1.

NK-33 LH2 Mod + 4 x LACE Kuznetsov air augmented rocket engine. N1-MOK. Study 1974. Ultimate derivative of NK-9. Propellants changed to LH2/LOX, 16 x modified NK-33 engines + 4 Liquid Air Cycle Engine Liquid Air/LH2 boosters.

NK-9V-11D53 Kuznetsov LOx/Kerosene rocket engine. N-1 stage 3 (block V). Out of Production. Modification of NK-9 engine for the N-1 lunar rocket. May be identical to NK-21 (stage 3).

NK-9V-11D54 Kuznetsov LOx/Kerosene rocket engine. N-1 stage 4 (block G). Out of Production. Modification of NK-9 engine for the N-1 lunar rocket. May be identical to NK-19 (stage 4).

Country: Russia. Launch Vehicles: Superraket, GR-1, R-9M. Propellants: Lox/Kerosene. Stages: Superraket Block A, GR-1 Stage 1. Agency: Kuznetsov bureau. Bibliography: 283, 306, 319, 341.

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