GEM 63XL Static Test

Building the world's largest monolithic solid rocket motor.
The GEM 63XL static test motor installed into the test bay at the Promontory, Utah, facility Test Area.

Qualification Motor

This booster motor is being qualified to power ULA’s Vulcan Centaur launch vehicle with a design that leverages Northrop Grumman’s GEM 63 motor in an extended length configuration.

Press Releases

Northrop Grumman Delivers First GEM 63XL Solid Rocket Boosters to Support Vulcan First Flight

Northrop Grumman Delivers First GEM 63XL Solid Rocket Boosters to Support Vulcan First Flight

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