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Engine Model: RD-0204. Manufacturer Name: RD-0204. Designer: Kosberg. Developed in: 1961-64. Application: UR-200 stage 1. Gross Mass: 1,961 kg (4,323 lb). Empty Mass: 1,524 kg (3,359 lb). Propellants: N2O4/UDMH. Thrust(vac): 559.000 kN (125,668 lbf). Thrust(sl): 500.000 kN (112,400 lbf). Isp: 311 sec. Isp (sea level): 278 sec. Burn time: 136 sec. Mass Engine: 381 kg (839 lb). Diameter: 0.89 m (2.91 ft). Length: 1.80 m (5.90 ft). Chambers: 1. Area Ratio: 29.80. Oxidizer to Fuel Ratio: 2.60. Thrust to Weight Ratio: 149.50. Country: Russia. Status: Hardware. First Flight: 1964.

Diameter is per chamber. Staged combustion cycle. Variant of RD-0203 with additional pressure sensor.

Bibliography:

  • Golubev, A A, KB KhimAvtomatiki - Straniy Istorii, Vol. 1, Voronezh 1995 via Dietrich Haeseler.
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