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SACRAMENTO, Calif., Nov. 17 /PRNewswire-FirstCall/ -- Aerojet, a GenCorp (NYSE: GY) company, used its propulsion to assist in the Space Shuttle Endeavour launch of its 15-day mission to deliver additional equipment and supplies to the International Space Station for resident crew expansion. Aerojet propulsion will also be used in on-orbit operations and during landing on this 27th shuttle mission to the Station.

Endeavour roared into orbit Friday night from Kennedy Space Center's launch pad 39A.

Aerojet's Orbital Maneuvering Engines, primary thrusters, gas generators and Vernier thrusters have flown on every space shuttle mission since the first Shuttle was launched in 1981. "We are proud of our 100 percent mission success record with the United States Space Shuttle," said Aerojet's Flight Production Director, David Carter. Aerojet engines and thrusters are also planned for use on Orion and Ares -- the new human space flight programs that NASA has under development.

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.