Aerojets Second Engine Test Further Validates Engine Design for NASAs Orion Crew Exploration Vehicle

SACRAMENTO, Calif., May 21, 2010 – Aerojet, a GenCorp (NYSE: GY) company, successfully completed a second set of hot-fire test sequences of its R-1E 25-pound thrust, bipropellant engine. This second test included more than 17,250 seconds of total burn time, demonstrating engine flexibility to operate under a broad variety of conditions expected for NASA’s Orion service module.

American Institute of Aeronautics and Astronautics (AIAA) Recognizes Aerojets Roger Myers as a Newly Elected Fellow

SACRAMENTO, Calif., May 13, 2010 /PRNewswire via COMTEX/ --Aerojet, a GenCorp (NYSE: GY) company, announced today that the American Institute of Aeronautics and Astronautics (AIAA), along with its board of directors, has named its Redmond-based general manager, Roger Myers, as a 2010 Fellow.

Aerojet Awarded Boeing Contract for Apache Helicopter Block III Components: Contract Reinforces Aerojet’s Expansion into Commercial Specialties Market

SACRAMENTO, Calif., May 10, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced today that it has been selected by The Boeing Company to supply heavy alloy weights for Boeing’s revolutionary Composite Main Rotor Blade (CMRB) in support of the AH-64D Apache Block III (AB3) program.

Aerojets Jettison Motor Contributes to Successful Orion Pad Abort-1 Flight Test

SACRAMENTO, Calif., May 6, 2010 – Aerojet, a GenCorp (NYSE: GY) company, along with NASA and the Lockheed Martin-led Orion industry team, successfully launched the first integrated Orion launch abort system flight test today. Conducted at the U.S.

Aerojet Welcomes Rear Admiral Joseph Horn to its Sacramento Headquarters

SACRAMENTO, Calif., May 4, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced today that it had the honor of hosting Aegis Ballistic Missile Defense (BMD) Program Director Rear Admiral Joseph Horn at its Sacramento headquarters.