Award Data

Fastening and joining technology has lagged behind the progress that has been made in other areas of composites for advanced air vehicles. Aerotech proposes the development of reversible polymeric adhesive bonding of composites using variable frequency microwave energy. With this method, composites are bonded using Poly Ether Ether Ketone (a high temperature thermoplastic) which is cured using v ...

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High frequency systems designers are now employing III-V heterostructure bipolar transistors (HBTs) in low power portable applications as well as in high power systems. Although most devices have used AlGaAs as the wide bandgap emitter, AlGaAs-based devices have had reliability problems at high current densities and high device operation temperatures. Advantages in device performance and fabrica ...

We will develop a proof-of-concept system that implements an innovative methodology to diagnose and repair unknown satellite anomalies. Our system is based on a novel approach that integrates Case-Based Reasoning (CBR) with Utility Theory. The resulting system deals with unknown and missing information, and selects from a case base the plans or actions that will either fix the satellite or will ...

HYPERVELOCITY LAUNCHER SYSTEMS PLACE SEVERE DEMANDS ON BOTH THE INSULATOR AND CONDUCTIVE RAILS. RECENTLY A WHISKER REINFORCED ALUMINA INSULATOR RAIL SHOWED SUPERIOR EROSION PERFORMANCE IN RAIL GUN TEST, HOWEVER, THE CONDUCTIVE COPPER RAILS ERODED SEVERELY AS WELL AS CREATE AN ANTICIPATED EXPANSION PROBLEM IN FULL SCALE SYSTEMS. IT IS ANTICIPATED A CONDUCTIVE CERAMIC, TIB(2), COMPOSITE CAN PERFORM ...

Affordable/low cost carbon-carbon (C-C) composites are enabling to a number of defense, aerospace and commercial applications. However, in addition to cost, their limitation is carbon gasification in oxidative environments above about 750¿F (=400¿C). An inhibited carbon matrix that reduces oxidation rate by a factor of 200 with up to double the strength of uninhibited composites which could be ...

Affordable/low cost carbon-carbon (C-C) composites are enabling to a number of defense, aerospace and commercial applications. However, in addition to cost, their limitation is carbon gasification in oxidative environments above about 750¿F (=400¿C). An inhibited carbon matrix that reduces oxidation rate by a factor of 200 with up to double the strength of uninhibited composites which could be ...

There is an acute need for improved and reliable technology for capturing and neutralizing airborne chemicals for both military and civilian applications given the increasing threat of chemical warfare by terrorists or accidental release of airborne chemicals. Of particular concern are scenarios where a large plume of chemical agent is already airborne. Nanomaterials Research Corp (NRC) will dur ...

Air pollution by volatile organic compounds (VOCs) has been a major environmental problem. Existing technologies for the control of VOC emission, such as thermal catalytic conversion, incineration and adsorption suffer from high energy cost and secondary pollution. An innovative nano-structured photocatalyst is proposed for the destruction/mineralization of VOCs in air at standard temperature an ...

PERSONNEL WORKING IN EXTREME ENVIRONMENTS OR WEARING BALLISTIC AND/OR NUCLEAR/BIOLOGICAL/CHEMICAL (NBC) PROTECTIVE CLOTHING ARE SUBJECT TO THE HAZARDS OF OVERHEATING. THESE HAZARDS INCLUDE PHYSICAL DISCOMFORT, DECREASED PHYSICAL AND MENTAL ABILITIES, DEHYDRATION, AND EVENTUALLY DEATH FROM HEAT STRESS. THE NUMBER OF PERSONNEL VULNERABLE TO THESE HAZARDS IS ALREADY QUITE LARGE AND IS STEADILY INCREA ...