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Aerojet Demos Advances in Controllable Rocket Motors

SACRAMENTO, Calif. --- Aerojet, a GenCorp Inc. company and a core propulsion provider for NASA's new space exploration vehicle, ORION, as well as several Missile Defense Agency propulsion programs, recently conducted an internally funded test firing of large-scale controllable solid rocket motors. Controllable solid rocket motors are an advanced propulsion capability that combines the simplicity of using solid propellants with the flexibility normally associated with use of liquid propellants.

This test resulted in the largest successful firing of the company's controllable solids product line using a high-power electromechanical valve control system. The electromechanical valve control system is being developed by Aerojet to provide faster responding, smaller and more reliable controllable solids that can be used on larger scale applications, like ORION, and will reduce development risks for controllable solids.

"In addition to proving the electromechanical valve control system, this test successfully concludes a one year effort to demonstrate a lower cost method of fabricating the high temperature device used to control thrust and flow direction in our controllable solid products," said Aerojet vice president of Space Programs, Julie Van Kleeck. "Aerojet is making steady progress toward improving the performance, cost and reliability of our controllable solids products."

Aerojet's controllable solid product line is critical to stabilizing the flight of space vehicles used in our nation's missile defense and by NASA. Currently the only company manufacturing and delivering controllable solids products for operational vehicles, Aerojet will continue to develop new capabilities to produce enhanced controllable solids for NASA and other future missile defense applications.


Aerojet is a world-recognized aerospace and defense leader principally serving the missile, space propulsion and armaments markets. GenCorp is a leading technology-based manufacturer of aerospace and defense products and systems with a real estate business segment.

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Aerojet Demonstrates Key Advances in Controllable Solid Propulsion Rocket Motors