Aerojet Milestones Pave Way for Orion Spacecraft's First Exploration Flight Test - Aerojet Successfully Completes Jettison Motor Fabrication and Shipment of Crew Module Reaction Control System Pod Assemblies

SACRAMENTO, Calif., Feb. 25, 2013 – Aerojet, a GenCorp (NYSE: GY) company, announced today that it successfully completed fabrication of the jettison motor and recently shipped the first two Crew Module Reaction Control System (CM RCS) pod assemblies for NASA’s Orion spacecraft’s Exploration Flight Test 1 (EFT-1).

Aerojet's AJ26 Engines Ignite Successful Antares(TM) Stage Test Hot Fire

SACRAMENTO, Calif., Feb. 22, 2013 (GLOBE NEWSWIRE) -- Aerojet, a GenCorp (NYSE:GY) company, announced that its dual AJ26 main engine system successfully powered today's Antares™ Stage 1 Hot Fire test conducted by Orbital Sciences Corporation (NYSE:ORB) at the Mid-Atlantic Regional Spaceport located at NASA's Wallops Flight Facility on the eastern shore of Virginia.

Aerojet Propulsion Systems Support Successful SM-3 Intercept Test

SACRAMENTO, Calif., Feb. 13, 2013 (GLOBE NEWSWIRE) -- Aerojet, a GenCorp (NYSE:GY) company, announced that its propulsion systems supported today's successful intercept test of Raytheon's Standard Missile-3 (SM-3) Block IA guided missile off the coast of Hawaii.

Aerojet's DACS Powers Successful Enhanced EKV in Non-Intercept Flight Test

SACRAMENTO, Calif., Jan. 27, 2013 – Aerojet, a GenCorp (NYSE: GY) company, announced that its Divert and Attitude Control Subsystem (DACS) on the modified Exoatmospheric Kill Vehicle (EKV) performed its mission-critical role in a planned non-intercept flight test of Boeing's Ground-based Midcourse Defense(GMD) program.

Aerojet's AJ26 Engine Completes Successful Hot Fire in Support of Antares(TM) Rocket

SACRAMENTO, Calif., Jan. 18, 2013 (GLOBE NEWSWIRE) -- Aerojet, a GenCorp (NYSE:GY) company, announced today that its AJ26 engine successfully completed a hot fire test this evening at NASA's Stennis Space Center.