Encyclopedia Astronautica
Pegasus-2


Hercules solid rocket engine. 118.2 kN. Isp=290s. Used on Pegasus, Taurus. First flight 1989.

Thrust (sl): 97.100 kN (21,829 lbf). Thrust (sl): 9,907 kgf. Chamber Pressure: 58.00 bar. Area Ratio: 65.

Gross mass: 3,370 kg (7,420 lb).
Unfuelled mass: 345 kg (760 lb).
Height: 2.65 m (8.69 ft).
Diameter: 1.27 m (4.16 ft).
Thrust: 118.20 kN (26,572 lbf).
Specific impulse: 290 s.
Burn time: 74 s.
Number: 19 .

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Associated Countries
See also
Associated Launch Vehicles
  • Pegasus American air-launched orbital launch vehicle. Privately-funded, air-launched winged light satellite launcher. More...
  • Taurus American all-solid orbital launch vehicle. Pad-launched launch vehicle using Pegasus upper stages and Castor-120 first stage. First launch used slightly larger Peacekeeper ICBM first stage instead of Castor-120. Under a 2002 contract from Boeing, Orbital developed a three-stage version of Taurus to serve as the interceptor boost vehicles for the US government's missile intercept system. The firm portion of the company's contract, awarded in early 2002, was valued at $450 million and extended through 2007. More...

Associated Manufacturers and Agencies
  • Hercules American manufacturer of rocket engines and rockets. Hercules, Wilmington, Delaware, USA. More...

Associated Propellants
  • Solid Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. More...

Associated Stages
  • Orion 50 Solid propellant rocket stage. Loaded/empty mass 3,370/345 kg. Thrust 118.20 kN. Vacuum specific impulse 292 seconds. More...

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