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RD-173
Part of RD-170
Glushko LOx/Kerosene rocket engine. Zenit-3 stage 1 (?). Design concept 1990's. Uprated version of RD-171 with 4 chambers, 1 turbo-pump and 2 gas generators. Intended for uprated Zenit named Zenit 3

Status: Design concept 1990's. Thrust: 8,181.00 kN (1,839,161 lbf). Specific impulse: 337 s. Specific impulse sea level: 311 s. Height: 3.78 m (12.40 ft). Diameter: 4.02 m (13.17 ft).

Chambers: 4. Chamber Pressure: 255.00 bar. Area Ratio: 36.87. Oxidizer to Fuel Ratio: 2.63.

Country: Russia. Propellants: Lox/Kerosene. Agency: Glushko bureau. Bibliography: 42.
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