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RD-58Z
Part of RD-58 Family

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

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

AKA: 11D58Z. Status: Developed 1981-1990. Thrust: 71.00 kN (15,961 lbf). Unfuelled mass: 300 kg (660 lb). Specific impulse: 361 s. Burn time: 660 s. Diameter: 2.90 m (9.50 ft).

Engine: 300 kg (660 lb). Chamber Pressure: 78.00 bar. Area Ratio: 189. Thrust to Weight Ratio: 24.13.



Country: Russia. Propellants: Lox/Kerosene. Stages: Zenit-V. Agency: Korolev bureau.

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