This page no longer updated from 31 October 2001. Latest version can be found at RD-253-UR-700

Manufacturer Name: RD-253. Designer: Glushko. Propellants: N2O4/UDMH Thrust(vac): 178,000 kgf. Thrust(vac): 1,745.00 kN. Chambers: 1. Country: Russia. Status: Designed 1964-1968. References: 225 , 335 . Comments: UR-700 Stage 3. Development of RD-253 with increased expansion ratio for upper stage use.
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Last update 12 March 2001.
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© Mark Wade, 2001 .