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RD-221
Part of RD-220 Family
Glushko Nitric acid/UDMH rocket engine. missile stage 2 (stage 1 used RD-220). Developed 1960-.

Status: Developed 1960-. Date: 1960-. Thrust: 1,118.00 kN (251,336 lbf). Unfuelled mass: 1,070 kg (2,350 lb). Specific impulse: 318 s. Height: 4.20 m (13.70 ft). Diameter: 2.40 m (7.80 ft).

Engine: 1,070 kg (2,350 lb). Chamber Pressure: 147.00 bar. Area Ratio: 119.8. Propellant Formulation: AK27P/UDMH. Thrust to Weight Ratio: 106.54. Oxidizer to Fuel Ratio: 2.8.



Family: Storable liquid. Country: Russia. Propellants: Nitric acid/UDMH. Agency: Glushko bureau. Bibliography: 320.

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