This variation of the company’s GEM 63 strap-on booster was developed in partnership with United Launch Alliance (ULA) to provide additional lift capability to the Vulcan Centaur rocket.
During the static test, the motor fired for approximately 90 seconds, producing nearly 449,000 pounds of thrust to validate the performance capability of the motor design.
Additionally, this firing verified the motor’s internal insulation, propellant grain, ballistics and nozzle in a hot-conditioned environment.
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Charlie Precourt, vice president of propulsion systems at Northrop Grumman, said, “This new motor optimises our best-in-class technologies and leverages flight-proven solid rocket propulsion designs to provide our customers with the most reliable product. Evolving the original GEM 63 design utilises our decades of GEM strap-on booster expertise while enhancing capabilities for heavy-lift missions.”
Northrop Grumman has supplied rocket propulsion to ULA and its heritage companies for a variety of launch vehicles since 1964. The GEM family of strap-on motors was developed starting in the early 1980s with the GEM 40 to support the Delta II launch vehicle.
The company then followed with the GEM 46 for the Delta II Heavy, and the GEM 60, which flew 86 motors over 26 Delta IV launches before retiring in 2019. The first GEM 63 motors supported ULA’s Atlas V rocket in November 2020.
Northrop Grumman solves the toughest problems in space, aeronautics, defence and cyber space to meet the ever evolving needs of customers worldwide.
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