Aerojet Rocketdyne Successfully Tests the Large Class Second Stage Motor for the United States Air Force Nuclear Weapons Center

Aerojet Rocketdyne Successfully Tests the Large Class Second Stage Motor for
the United States Air Force Nuclear Weapons Center

SACRAMENTO, Calif., Feb. 12, 2014 (GLOBE NEWSWIRE) -- Aerojet Rocketdyne, a
GenCorp (NYSE:GY) company, announced today that its Large Class 92" diameter
second stage solid rocket motor was successfully tested at simulated altitude
conditions at the Arnold Engineering and Development Complex (AEDC) at Arnold
AFB, Tenn.

The Large Class second stage was designed, fabricated and tested by Aerojet
Rocketdyne for the Air Force Nuclear Weapons Center at Hill AFB, Utah, under a
demonstration contract which required use of available technologies applicable
to multiple future common strategic propulsion systems.

"This stage is a significant improvement over currently fielded systems," said
Tyler Evans, Aerojet Rocketdyne vice president, Rocket Shop^SM defense
advanced programs. "The application of this advanced design, using affordable
materials and subsystems provided by our strong industrial base partnerships,
will reduce future acquisition program costs and improve system reliability.
These technologies are relevant across all Air Force and Navy missiles,
whether for strategic deterrence, prompt strike or other applications, and
they are key to sustaining the needs of the nation's warfighters."

Aerojet Rocketdyne leveraged the contract to sustain and improve the solid
rocket motor industrial base, a critical national need recognized by the
Office of the Secretary of Defense. The company's Rocket Shop^SM staff created
a stage design capable of being fielded for 35 years, a significant
improvement over currently fielded ground-based systems. Affordability
features were integrated into the design, including the use of low-cost
propellant common to the solid rocket boosters already in production, and a
domestically sourced nozzle exit cone material. The motor case was designed
and fabricated at the General Dynamics facility in Lincoln, Neb., using
domestically sourced carbon fiber. The thrust vector actuation system was
fabricated by Honeywell Aerospace in Tempe, Ariz.

Aerojet Rocketdyne cast the motor and assembled the stage at its facility in
Sacramento, Calif., using facilities optimized for affordable production. The
test was developed and executed at AEDC in conjunction with the Aerospace
Testing Alliance, the test facility's operating contractor.

Aerojet Rocketdyne is a world-recognized aerospace and defense leader
providing propulsion and energetics to the space, missile defense, strategic,
tactical missile, and armaments areas in support of domestic and international
markets. GenCorp is a diversified company providing innovative solutions to
its customers in the aerospace and defense, and real estate markets.
Additional information about Aerojet Rocketdyne and GenCorp can be obtained by
visiting the companies' websites at www.Rocket.com and www.GenCorp.com.

CONTACT: Glenn Mahone, Aerojet Rocketdyne, 202.302.9941
         Glenn.Mahone@Rocket.com
         Erin Dick, Aerojet Rocketdyne, 818.586.4977
         Erin.Dick@Rocket.com

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