This page no longer updated from 31 October 2001. Latest version can be found at RD-0203

Manufacturer Name: RD-0203. Government Designation: 8D44. Designer: Kosberg. Developed in: 1961-64. Application: UR-200 stage 1. Used on stages: UR-200 stage 1. Gross Mass: 1,961 kg. Empty Mass: 1,525 kg. Propellants: N2O4/UDMH Thrust(vac): 57,000 kgf. Thrust(vac): 559.00 kN. Isp: 311 sec. Isp (sea level): 278 sec. Burn time: 136 sec. Mass Engine: 381 kg. Diameter: 0.9 m. Length: 1.8 m. Chambers: 1. Area Ratio: 29.81. Oxidizer to Fuel Ratio: 2.60. Thrust to Weight Ratio: 149.50. Country: Russia. Status: Hardware. First Flight: 1964. References: 309 . Comments: DU consisting of 4 RD-0204 gimballed motors. Staged combustion cycle.
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Last update 12 March 2001.
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