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RD-57M
Part of RD-54 Family
Lyulka LOx/LH2 rocket engine. Vulkan Blok V. Development ended 1976. Version with extendible nozzle. Length 4.06 / 2.61 m. Specific impulse 461 / 448 sec. Area ratio 170 / 87.6.

AKA: 11D57M. Status: Development ended 1976. Date: 1960-74. Thrust: 397.00 kN (89,249 lbf). Unfuelled mass: 874 kg (1,926 lb). Specific impulse: 461 s. Height: 4.06 m (13.32 ft). Diameter: 2.00 m (6.50 ft).

Ref. Lyulka 94 has higher mass at 911 kg and higher fixed nozzle area ratio at 100.

Throttled thrust(vac): 303.000 kN (68,117 lbf). Engine: 874 kg (1,926 lb). Chamber Pressure: 115.00 bar. Area Ratio: 170. Thrust to Weight Ratio: 46.31. Oxidizer to Fuel Ratio: 6.2.



Country: Russia. Launch Vehicles: Vulkan. Propellants: Lox/LH2. Stages: Vulkan Blok V. Agency: Lyulka bureau.

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