Aerojet's Gas Generators Provide Power for Ares I-X Control

SACRAMENTO, Calif., Oct. 28 /PRNewswire-FirstCall/ -- Aerojet, a GenCorp
(NYSE: GY) company, announced today that its hydrazine gas generators provided
the power for the hydraulic system that steered the first stage nozzle during
the Ares I-X successful test flight. The Ares I-X test flight launched from
Cape Canaveral Air Force Station in Florida at 11:30 EDT this morning.

Aerojet provided two hydrazine gas generators that drive the hydraulic system
which is used to steer the large nozzle on the first stage solid rocket
booster (SRB). These gas generators have flown on every space shuttle SRB
since the inception of the shuttle program. The gas generators are built and
refurbished in Aerojet's Redmond, Wash. facility.

"We are proud to provide NASA with reliable control system hardware," said
Olwen Morgan, Aerojet manager of business development in Redmond, Wash. "We
look forward to further support of NASA's new manned space initiatives."

Aerojet is a world-recognized aerospace and defense leader principally serving
the missile and space propulsion, defense and armaments markets. GenCorp is a
leading technology-based manufacturer of aerospace and defense products and
systems with a real estate segment that includes activities related to the
entitlement, sale, and leasing of the company's excess real estate assets.
Additional information about Aerojet and GenCorp can be obtained by visiting
the companies' Web sites at http://www.Aerojet.com and http://www.GenCorp.com.

SOURCE Aerojet

Glenn Mahone, +1-202-302-9941, Glenn.Mahone@Aerojet.com, or Kristin Conner,
+1-916-355-2143, Kristin.Conner@Aerojet.com, both of Aerojet