Aerojet Bipropellant Engine Sets New Performance Record

December 8, 2008

SACRAMENTO, Calif., Dec. 8 /PRNewswire-FirstCall/ — Aerojet, a GenCorp
(NYSE: GY) company, announced today that its 150-lbf thrust high performance
storable bipropellant engine demonstrated a specific impulse of 333.5 seconds
at its Redmond, Wash. facility.

The Advanced Materials Bipropellant Rocket (AMBR) engine was designed and
tested under contract to NASA’s In-Space Propulsion Technology Program (ISPT),
http://www.inspacepropulsion.com, with the goal of maximizing the performance
of storable bipropellant engines. The ISPT Program, located at NASA Glenn
Research Center, develops propulsion technologies to enable or benefit near
and mid-term NASA space science missions by significantly reducing spacecraft
cost, mass and travel times.

Aerojet’s AMBR engine incorporates an innovative injector and
pre-combustor design with an iridium-lined rhenium combustion chamber,
packaged within the envelope of existing 100-lbf thrust engines. The flight
design engine uses hydrazine fuel and nitrogen tetroxide oxidizer at feed
pressures and mixture ratios typical of current flight propulsion systems. The
engine demonstrated acoustic and thermal stability at chamber temperatures of
up to 4000 degrees F (2200 degrees C). The test series covered a wide range of
mixture ratios, feed pressures and burn durations, including steady state
burns lasting as long as 800 seconds.

“Aerojet has achieved significant performance advancement with the AMBR
engine,” said Dr. Scott Miller, Aerojet’s principal investigator and director
of systems and technology development. “With the completion of planned
environmental testing, the AMBR engine will be at Technology Readiness Level 6
and ready for final design and qualification for a specific application.” This
makes the engine an ideal candidate for future NASA science missions and
upgrades to current civil and commercial space programs.

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

SOURCE Aerojet

Source: newswire

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