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Defense

Unmanned Autonomous Helicopter

Northrop Grumman Corp. West Falls Church, VA 703-280-2900 www.northropgrumman.com All Navy aircraft must go through electromagnetic interference testing to ensure that they can operate safely in the ship...

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Articles
RF & Microwave Electronics

Expanding the Use of Aerial Downlinks

Today, airborne downlinks are no longer limited to strategic command applications. More and more, first responders, fire departments, EMS personnel, and others are employing airborne downlinks to meet a...

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Briefs
Materials

Nonlinear Acoustic Metamaterials for Sound Attenuation Applications

An acoustic crystal composed of tightly packed spherical particles can exhibit a wide spectrum of acoustic properties with responses varying from linear to highly nonlinear...

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Briefs
Materials

Fire Resistance of Geopolymer Concretes

Geopolymer concrete has been proposed as an alternative to Portland cement concrete in applications requiring high degrees of fire resistance, because the intrinsic chemistry of the geopolymer binder does...

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Briefs
Mechanical & Fluid Systems

Water Mist System for Shipboard Machinery Space Fires

Water mist has been determined to be a preferred alternative to Halon 1301 total flooding to extinguish fires occurring in ship machinery spaces and pump rooms, because it is toxicologically...

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Articles
Defense

Man-Wearable Control Units for Military Robotics

It is no secret that robots are rapidly asserting themselves in today's military applications. For the duration of the Iraq War, robots have roamed the streets of Baghdad, Fallujah, and other...

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Briefs
Materials

Integrated Aircraft Oxygen Sensor

Shortly after its takeoff from New York City on July 17, 1996, Trans World Airlines (TWA) Flight 800 exploded over the Atlantic Ocean and crashed. The accident investigation board determined that the center wing fuel tank caught fire and exploded. Although the ignition source remains unknown, it was unquestionably...

Briefs
Electronics & Computers

Adaptable Miniature Initiation System Technology

The ever-changing nature of warfare presents constant challenges to weapon system designers, who must carefully consider various perspectives of mutual importance. Specifically, designers must...

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Briefs
Materials

Composite Material Fire Safety Training Course

AFRL scientists and engineers, working cooperatively with experts from academia and the firefighting community, have developed a Composite Material Fire Safety training program designed to improve...

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Briefs
Weapons Systems

Recent Advances in Insensitive Munitions

AFRL scientists from the High Explosives Research and Development facility successfully developed, demonstrated, and transitioned a next-generation melt-castable explosive formulation. The new...

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