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astronautix.com GEM 46


Designer: Hercules. Used on stages: GEM 46. Used on launch vehicles: Delta 3 , Delta IV Medium+ (4, 2), Delta IV Medium+ (5, 2), Delta IV Medium+ (5, 4). Gross Mass: 19,290 kg. Empty Mass: 2,280 kg. Propellants: Solid Thrust(vac): 62,000 kgf. Thrust(vac): 608.10 kN. Isp: 274 sec. Isp (sea level): 242 sec. Burn time: 75 sec. Diameter: 1.2 m. Length: 14.7 m. Chambers: 1. Chamber Pressure: 105.00 bar. Area Ratio: 14.00. Country: USA. Status: In Production. First Flight: 1998. Last Flight: 1999. Flown: 18. References: 455 . Comments: Air-ignited versions have nozzle ratio of 24.8:1, specific impulse of 284 sec.
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Last update 12 March 2001.
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