Aerojet Rocketdyne SM-3 Block IIA TDACS Completes Critical Design Review

Aerojet Rocketdyne SM-3 Block IIA TDACS Completes Critical Design Review

SACRAMENTO, Calif., Aug. 30, 2013 (GLOBE NEWSWIRE) -- Aerojet Rocketdyne, a
GenCorp (NYSE:GY) company, announced that it successfully conducted its
Throttling Divert and Attitude Control System (TDACS) Critical Design Review
(CDR) for the Standard Missile-3 (SM-3) Block IIA guided missile program. The
SM-3 program is managed by the Missile Defense Agency (MDA) with Raytheon
Missile Systems as the prime contractor.

"The on-time completion of this CDR demonstrates the readiness of this next
generation propulsion system for qualification testing and subsequent
manufacturing," said Dave Parker, executive director of SM-3 programs for
Aerojet Rocketdyne's Missile Defense and Strategic Systems business unit.
"We're extremely proud of our TDACS product line, knowing that the warfighter
will have the pinpoint control needed to defend the United States and its
allies. The proven SM-3 Block IB TDACS flight test performance coupled with
our Block IIA TDACS ground test performance validates this state-of-the-art
propulsion technology for future DACS systems." 

The SM-3 Block IIA TDACS is being developed at Aerojet Rocketdyne's Sacramento
facility, where the SM-3 Block IB TDACS also is produced.

SM-3 Block IIA guided missile, developed as a SM-3 Cooperative Development
Program with Japan's Ministry of Defense (MOD), uses hit-to-kill technology to
destroy targets. The guided missile is designed to engage threat ballistic
missiles outside of the Earth's atmosphere during the mid-course phase of an
incoming missile.

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, energy 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
        
         Kristin Conner, Aerojet Rocketdyne,
         916.355.2143
         Kristin.Conner@Rocket.com

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