Aerojet Rocketdyne Propulsion Inserts NASA's LADEE in Lunar Orbit

Aerojet Rocketdyne Propulsion Inserts NASA's LADEE in Lunar Orbit

SACRAMENTO, Calif., Oct. 7, 2013 (GLOBE NEWSWIRE) -- Aerojet Rocketdyne, a
GenCorp (NYSE:GY) company, announced today that its 100-lbf High Performance
Apogee Thruster (HiPAT™) bipropellant engine, integrated into a propulsion
system built by Space Systems/Loral (SSL), enabled NASA's Lunar Atmosphere and
Dust Environment Explorer (LADEE) to achieve lunar orbit on Oct. 6.

The HiPAT™ performed two phasing burns, each of which increased the apogee in
preparation for two Lunar Orbit Insertion burns.

"From the crewed Apollo vehicle to the orbiters of Lunar Prospector and LADEE,
Aerojet Rocketdyne provides propulsion and power for lunar exploration," said
Aerojet Rocketdyne Vice President of Space Systems, Warren Yasuhara. "LADEE is
designed to characterize the tenuous lunar atmosphere and dust environment—an
important study in preparation for returning astronauts to the moon."

Demonstrating NASA's success in leveraging the capability of commercially
proven technology for U.S. Government missions, Aerojet Rocketdyne delivered
the HiPAT™ to SSL for integration into the LADEE propulsion system in March
2011.The bi-propellant propulsion system is a variant of the mission critical
system, based on the HiPAT™ engine, which SSL has successfully used over many
years for its geostationary commercial satellites.

Advantages of the HiPAT™ engine include its ability to operate over a broad
range of pressures and propellant mixtures that make it uniquely suitable for
missions like LADEE which require multiple burns over a relatively long period
of time.The HiPAT™ will continue to periodically re-boost LADEE as it gathers
detailed information about the lunar atmosphere, conditions near the surface
and environmental influences on lunar dust.

LADEE, the first spacecraft designed, developed, built, integrated and tested
at NASA's Ames Research Center in Moffett Field, Calif., was launched on Sept.
6, 2013, from NASA's Wallops Flight Facility in Virginia aboard the Minotaur V
rocket.The Minotaur V, provided by the U.S. Air Force, was a repurposed
three-stage Peacekeeper Missile to which Orbital Sciences Corp., Dulles, Va.,
added two additional stages and new avionics and guidance software.Aerojet
Rocketdyne built the SR119 Peacekeeper second stage solid rocket motor that
helped launch LADEE into an Earth-centric trajectory.

Aerojet Rocketdyne is a world-recognized aerospace and defense leader
providing propulsion and energetics to the space, missile defense and
strategic systems, tactical systems and armaments areas, in support of
domestic and international markets. GenCorp is a diversified company that
provides innovative solutions that create value for 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
         Erin Dick, Aerojet Rocketdyne, 818-586-4977
         Erin.Dick@Rocket.com

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