Manufacturer Name: RD-0108. Government Designation: 8D715P. Other Designations: RD-461, 11D55, 8D715K, RO-8. Designer: Kosberg. Developed in: 1961-65. Application: Voskhod 11A57, Molniya 8K78 stage 3. Used on stages: Molniya 8K78-2, Voskhod 11A57-2. Used on launch vehicles: Molniya 8K78, Voskhod 11A57. Propellants: Lox/KeroseneThrust(vac): 30,380 kgf. Thrust(vac): 297.90 kN. Isp: 326 sec. Burn time: 250 sec. Mass Engine: 410 kg. Diameter: 0.6 m. Chambers: 4. Chamber Pressure: 68.20 bar. Country: Russia. Status: Out of Production. First Flight: 1960. Last Flight: 1976. Flown: 331. References: 177 .