Engine Model: RD-704. Manufacturer Name: RD-704. Designer: Glushko. Developed in: 1990's. Propellants: Lox/Kerosene/LH2. Thrust(vac): 1,966.000 kN (441,974 lbf). Thrust(sl): 1,720.100 kN (386,694 lbf). Throttled thrust(vac): 782.000 kN (175,800 lbf). Isp: 407 sec. Isp (sea level): 356 sec. Mass Engine: 2,422 kg (5,339 lb). Diameter: 1.77 m (5.80 ft). Length: 3.81 m (12.49 ft). Chambers: 1. Chamber Pressure: 294.00 bar. Thrust to Weight Ratio: 82.77. Country: Russia. Status: Developed 1990's. First Flight: 1999. Tripropellant engine. Mass excluding sensors, gimbal actuators and heat shield. Single chamber derived from RD-701 project. Mass excluding sensors, gimbal actuators and heat shield. Chamber pressure 294 / 124 bar. Specific impulse 407 / 452 sec.
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