Engine Model: RD-217. Manufacturer Name: RD-217. Government Designation: 8D515. Designer: Glushko. Developed in: 1958-61. Application: R-16 stage 1. Propellants: Nitric acid/UDMH. Thrust(vac): 865.000 kN (194,459 lbf). Isp: 289 sec. Isp (sea level): 246 sec. Mass Engine: 980 kg (2,160 lb). Chambers: 2. Chamber Pressure: 73.60 bar. Area Ratio: 18.80. Oxidizer to Fuel Ratio: 2.50. Thrust to Weight Ratio: 90.00. Country: Russia. Status: Out of Production. First Flight: 1961. Original intended use unknown. Three RD-217 clustered to make RD-218.
Bibliography:- Glushko, V P, Albom Konstruktsiy ZhRD, Vol. 1 1968, Vol. 3 & 4 1969 via Dietrich Haeseler.