Manufacturer Name: RD-107. Government Designation: 8D76. Designer: Glushko. Application: Sputnik 8A91-0. Used on stages: Sputnik 8A91-0. Used on launch vehicles: Sputnik 8A91. Propellants: Lox/KeroseneThrust(vac): 99,000 kgf. Thrust(vac): 971.00 kN. Isp: 310 sec. Isp (sea level): 252 sec. Burn time: 150 sec. Mass Engine: 1,155 kg. Diameter: 0.7 m. Length: 2.9 m. Chambers: 4. Chamber Pressure: 56.90 bar. Area Ratio: 18.90. Country: Russia. Status: Out of Production. First Flight: 1958. Last Flight: 1958. Flown: 8. References: 173 . Comments: OKB Glushko. Used on 8A91 Stage 0. Developed in 1956-1957. Propellants kerosene (RG-1) / Lox. Diameter is per chamber.