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RD-58

Block D / 11D68

Block D / 11D68
Aft view of the Block D lunar crasher stage and its 11D68 engine. The Block D would have taken the LK lunar lander to near the surface of the moon. This stage remains in use today atop the Proton rocket.
Credit: © Mark Wade

Korolev LOx/Kerosene rocket engine family. High-performance upper-stage engine developed for N1 lunar crasher stage, but saw general use as restartable Block D upper stage of Proton launch vehicle. First flight 1967. Also proposed for N12RA, Proryv, LM, 315GK for Zenit, Angara, Energia-M.

AKA: 11D58. Date: 1964-68. Number: 45 . Thrust: 83.40 kN (18,749 lbf). Unfuelled mass: 300 kg (660 lb). Specific impulse: 349 s. Burn time: 600 s. Diameter: 1.17 m (3.83 ft).

Kerosene changed from T-1 to RG-1 to achieve sufficient chamber cooling.

Engine: 300 kg (660 lb). Chamber Pressure: 78.00 bar. Area Ratio: 189. Propellant Formulation: Lox/RG-1. Thrust to Weight Ratio: 28.33.



Subtopics

RD-58M Kosberg Lox/Kerosene rocket engine. Proton 8K824K / 11S824M; 11S824F; 11S86; 11S861; 17S40 stage 4 (block DM). In production. First flight 1974.

17D11 Kosberg Lox/Kerosene rocket engine. Buran OMS and verniers. Out of Production. Buran orbital propulsion system, including 2 x 17D12, 38 x 17D15, 8 x RDMT-200K

17D12 Kosberg Lox/Kerosene rocket engine. Out of Production. Version of RD-58 for Buran orbital propulsion system 17D11. Used synthetic kerosene ('Sintin') for higher specific impulse.

RD-58S Kosberg Lox/Kerosene rocket engine. Proton 8K82K / 11S861-01 stage 4 (block DM). Version 17D12 for Buran OMS. Version uses synthetic kerosene ('Sintin') for higher specific impulse. First flight 1994.

RD-58Z Kosberg Lox/Kerosene rocket engine. Zenit stage 3. Developed 1981-1990.

RD-58MF Kosberg Lox/Kerosene rocket engine. In Production. Multi-function variant of RD-58 for uprated upper stages applications (Zenit stage 3, Angara). Block-DM-SL for Sea-Launch may have used RD-58M.

Country: Russia. Launch Vehicles: Proton-K/D, N1, N1F, N1 1969, Energia. Propellants: Lox/Kerosene. Stages: N1 Block D, Block D, Proton 11S824. Agency: Korolev bureau.
Photo Gallery

Engine 11D68 detailEngine 11D68 detail
Close-up view of the 11D68 Block D lunar crasher stage showing detail of the BOZ orientation/ullage thrusters that control the stage during coast, restart, and manoeuvre.
Credit: © Mark Wade



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