Engine Model: RD-868. Manufacturer Name: RD-868. Designer: Yuzhnoye. Developed in: 1983-. Application: Apogee stage. Propellants: N2O4/UDMH. Thrust(vac): 23.250 kN (5,227 lbf). Isp: 325 sec. Burn time: 1,600 sec. Mass Engine: 203 kg (447 lb). Diameter: 2.35 m (7.70 ft). Length: 1.10 m (3.60 ft). Chambers: 1 + x. Chamber Pressure: 91.50 bar. Oxidizer to Fuel Ratio: 2.20. Thrust to Weight Ratio: 11.67. Country: Ukraine. Status: Developed 1983-. Still in development in 1996. One main and an unknown number of control thrusters. 23.25 + 0.03 kN. Chamber pressure 91.5 / 6.9 bar. Specific impulse 325 / 230 sec. Burn time 1600 / 7200 sec. Oxidizer to fuel ratio 2.2 / 1.6
Bibliography:- Shnyakin, V N, Shidkostnye Raketye Dvigateli - Opisanie i Osnovnye Tekhnicheskie Dannye, GKB Yuzhnoe "Yangel", Dnepropetrovsk 1996 via Dietrich Haeseler.
