Engine Model: Hercules. Designer: Hercules. Gross Mass: 625,000 kg (1,377,000 lb). Empty Mass: 75,000 kg (165,000 lb). Propellants: Solid. Thrust(vac): 15,565.800 kN (3,499,331 lbf). Thrust(sl): 14,096.400 kN (3,168,997 lbf). Isp: 286 sec. Isp (sea level): 259 sec. Burn time: 133 sec. Diameter: 3.81 m (12.49 ft). Length: 38.41 m (126.01 ft). Chambers: 1. Country: USA. Status: In development. Planned replacement for shuttle solid rocket boosters after the shuttle disaster. A billion dollars spent in development, but contract terminated when NASA decided to stay with Thiokol and a redesigned SRM.
Hercules used on Rocket Stages