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RD-261
Part of RD-215 Family
Glushko N2O4/UDMH rocket engine. Tsyklon 3 stage 1. In production. Based on RD-251 First flight 1977.

Status: In production. Date: 1967-69. Number: 121 . Thrust: 3,032.00 kN (681,620 lbf). Unfuelled mass: 1,764 kg (3,888 lb). Specific impulse: 301 s. Specific impulse sea level: 270 s. Burn time: 120 s. Height: 1.76 m (5.78 ft). Diameter: 0.75 m (2.44 ft).

Chambers: 6. Engine: 1,764 kg (3,888 lb). Chamber Pressure: 83.00 bar. Area Ratio: 14.7. Thrust to Weight Ratio: 175.27. Oxidizer to Fuel Ratio: 2.6.



Family: Storable liquid. Country: Russia. Launch Vehicles: Tsiklon-3. Propellants: N2O4/UDMH. Stages: Tsyklon 3-1. Agency: Glushko bureau. Bibliography: 342, 344, 349.

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