Designer: Rocketdyne. Used on stages: Jupiter, Jupiter Cluster. Used on launch vehicles: Juno II, Saturn A-2. Propellants: Lox/KeroseneThrust(vac): 77,367 kgf. Thrust(vac): 758.70 kN. Isp: 282 sec. Isp (sea level): 248 sec. Burn time: 182 sec. Mass Engine: 725 kg. Diameter: 2.7 m. Chambers: 1. Chamber Pressure: 39.50 bar. Area Ratio: 8.00. Thrust to Weight Ratio: 106.71. Country: USA. Status: Out of Production. First Flight: 1958. Last Flight: 1961. Flown: 10.