This page no longer updated from 31 October 2001. Latest version can be found at RD-173

Manufacturer Name: RD-173. Designer: Glushko. Application: Zenit-3 stage 1 (?). Propellants: Lox/Kerosene Thrust(vac): 834,230 kgf. Thrust(vac): 8,181.00 kN. Isp: 337 sec. Isp (sea level): 311 sec. Diameter: 4.0 m. Length: 3.8 m. Chambers: 4. Chamber Pressure: 255.00 bar. Area Ratio: 36.87. Oxidizer to Fuel Ratio: 2.63. Country: Russia. Status: Design concept 1990's. References: 42 . Comments: Uprated version of RD-171 with 4 chambers, 1 turbo-pump and 2 gas generators. Intended for uprated Zenit named Zenit 3.
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Last update 12 March 2001.
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© Mark Wade, 2001 .