Innovative Aerojet Propulsion System Powers High-Speed Anti-Radiation Demonstration...

Tue Aug 19, 2008 6:19pm EDT

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Innovative Aerojet Propulsion System Powers High-Speed Anti-Radiation
Demonstration (HSAD) Flight Vehicle

SACRAMENTO, Calif., Aug. 19 /PRNewswire-FirstCall/ -- Aerojet, a GenCorp
(NYSE: GY) company, announced today that its Integral Rocket Ramjet (IRR)
propulsion system which incorporates a nozzleless booster and Variable-Flow
Ducted Rocket (VFDR) ramjet technologies, powered a successful air-launched
flight vehicle demonstration at White Sands Missile Range in New Mexico.
    Aerojet's propulsion system, developed for the High-Speed Anti-Radiation
Demonstration (HSAD) program, is designed to meet the evolving requirements
for a long-range, reactive missile propulsion system with near-term transition
to the war-fighter. The HSAD program is sponsored by the Office of Naval
Research (ONR) Air Warfare and Naval Weapons Applications (Code 352) with the
Naval Air Warfare Center Weapons Division/China Lake (NAWCWD/CL) serving as
the program lead and system integrator.
    For the flight test, the controlled test vehicle (CTV) was successfully
rail-launched from a QF-4 drone aircraft, accelerated to supersonic speed, and
transitioned to supersonic sustain-phase ramjet flight using Aerojet's VFDR
ramjet propulsion system. The VFDR ramjet system features a responsive
energy-management capability that provides the CTV with active propulsion
throughout the entire sustain flight enabling flight at speeds much higher
than standard solid propellant rocket-powered systems.
    The HSAD system passed a rigorous ground and environmental test program
prior to flight. Using flight-weight hardware, these tests demonstrated the
transition-readiness of the system. "What makes the HSAD program unique is
that this high-performance propulsion system was manufactured and integrated
into a war-fighter-class weight and size-compliant missile airframe," said
Gariel D. Randolph, PE, HSAD program manager. "We are truly excited about
these results and for what they bring to future capabilities." The HSAD
all-solid propellant IRR design provides improved Munitions Safety and other
benefits over standard solid propellant rockets. The VFDR flight test
continues Aerojet's leading role in the development of next-generation
tactical propulsion for the U.S. military.
    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 and
SOURCE  Aerojet

Glenn Mahone, +1-202-302-9941,, or Kristin Conner,
+1-916-355-2143,, both of Aerojet
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