Award Data

This proposal describes an innovative Ultra-Low NOx annular swirl combustor concept for aircraft gas turbine engines. The concept is based on previously demonstrated means for creating high mixing rate regions in free shear flows by manipulating existing vorticity to create multiple discrete vortices in the flow. This mixing technique coupled with a Lean-Burn Direct-Ignition (LBDI) combustion stra ...

DIRECT COMPUTATION OF TURBULENCE NOISE IS A LOGICAL APPLICATION FOR ADVANCED COMPUTATIONAL FLUID DYNAMICS, CFD, PROGRAMS RUN ON SUPERCOMPUTERS. THIS WOULD ELIMINATE THE HIGHLY EMPIRICAL ASPECTS OF PRESENT NOISE PREDICTION TECHNIQUES AND ENABLE STUDY OF ADVANCED HYPERSONIC PROPULSION SYSTEMS. HOWEVER, MANY OF THE SAME PERSISTENT PROBLEMS OF IMPLEMENTATION THAT EXIST IN AEROACOUSTIC THEORY AND MEASU ...

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THIS PROPOSAL INVOLVES THE DEVELOPMENT OF WIRELESS HEADSET SYSTEM. THE SYSTEM IS AN APPLICATION OF DIGITAL AUDIO ENCODING, PACKET SWITCHING, LOCAL AREA NETWORKING, AND TIME/ADDRESS MULTIPLEXING TECHNIQUES TO FORM A NETWORK OF PERSONAL ACOUSTIC HEADSETS TO BE WORN BY A NUMBER OF PERSONNEL. THIS INNOVATION ALLOWS THE USE OF MANY HEADSETS ON THE SAME CARRIER FREQUENCY TO OPERATE FROM A SINGLE BASE UN ...

CONTAMINATION OF THE NATION'S DRINKING WATER SUPPLIES BY HAZARDOUS, SYNTHETIC VOLATILE ORGANIC CHEMICALS (VOCS) IS BECOMING A WIDESPREAD PROBLEM. THIS PROBLEM IS OF GREAT CONCERN WITH RESPECT TO CONTAMINATED GROUNDWATER. GROUNDWATER IS THESOURCE OF DRINKING WATER FOR ABOUT HALF THE NATION. THE EPAESTIMATES THAT UP TO 20% OF THE DRINKING WATER THAT COMES FROM GORUNDWATER CONTAINS VOCS. METHODS FOR ...

METALS AND METAL COMPLEXES PLAY AN IMPORTANT ROLE IN MANY INDUSTRIAL PROCESSES. DUE TO THE WIDESPREAD AND LARGE-SCALEUSE OF METALS, MONITORING THEIR PRESENCE IN WASTE STREAMS AND CONTROLLING THEIR LEVELS OF DISCHARGE INTO THE ENVIRON-MENT ARE DIFFICULT AND COSTLY TASKS--TASKS THAT ARE ALL THE MORE IMPORTANT GIVEN THE TOXICITY OF MANY COMMONLY USED METALS. CURRENTLY AVAILABLE SENSOR TECHNOLOGY FOR ...

VAST QUANTITIES OF INDUSTRIAL ACIDS, BASES, PROCESSING SOLUTIONS, AND SLUDGES CONTAIN HEAVY METALS. THESE ARE OFTEN HAZARDOUS, AND IF LEFT UNREGULATED, PRESENT A SERIOUS THREAT TO GROUNDWATER AND THE SURROUNDING ENVIRONMENT. TECHNOLOGIES AVAILABLE FOR TREATING INDUSTRIAL WASTES ARE TYPICALLY INADEQUATE AND EXTREMELY EXPENSIVE. NEW METHODS ARE CLEARLY NEEDED FOR REMOVING TOXIC METALS FROM PROCESS S ...

A new class of RO membrane is proposed that would exhibit unprecedented selectivity against organic compounds. Such membranes would be useful in water-recycle applications in space, as they would lead to exceedingly high water purity. As envisioned, the membranes would behave as "barriers" to organic molecules but still would allow water to pass. Two key innovations are required. The first is the ...

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The proposed innovation is to apply differential phase acoustic microscopy to NDE inspection of ceramic Sn3N4 ball bearings. Differential phase acoustic microscopy is more sensitive than standard acoustic microscopy, and can provide the location and size of defects, which is a specific goal of the subtopic. The specific goal of this research is to assess the feasibility of differential phase acous ...