Engine Model: RD-211. Manufacturer Name: RD-211. Designer: Glushko. Developed in: 1952-55. Application: long-distance missile. Propellants: Nitric acid/Kerosene. Thrust(vac): 642.300 kN (144,395 lbf). Isp: 262 sec. Isp (sea level): 224 sec. Burn time: 122 sec. Mass Engine: 635 kg (1,400 lb). Diameter: 1.65 m (5.41 ft). Length: 2.70 m (8.80 ft). Chambers: 4. Chamber Pressure: 39.20 bar. Area Ratio: 9.52. Oxidizer to Fuel Ratio: 4.05. Thrust to Weight Ratio: 103.11. Country: Russia. Status: Developed 1952-55. Original four-chamber engine design planned for use on the R-12 IRBM. Abandoned due to limited thrust and the RD-214 was developed in its place.
Bibliography:- Glushko, V P, Albom Konstruktsiy ZhRD, Vol. 1 1968, Vol. 3 & 4 1969 via Dietrich Haeseler.