Award Data

REQUIREMENTS FOR RAILGUN ARMATURES DICTATE MATERIALS PROPERTIES VALUESWHICH ARE DIFFICULT TO OBTAIN FROM CONVENTIONAL MATERIALS. THE NEED EXISTS FOR A MATERIAL WHICH HAS LOW DENSITY, HIGH MELTING POINT, HIGH THERMAL CONDUCTIVITY, LOW COEFFICIENT OF THERMAL EXPANSION, HIGH ELECTRICAL CONDUCTIVITY, HIGH VALUES FOR STRENGTH, AND GOOD CHARACTERISTICS OF LUBRICITY. GRAPHITE FIBER GROWN FROM PYROLYSIS O ...

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ACTIVE RADIO FREQUENCY CAVITY (PATENT PENDING0, OR ARFC, IS A CONCEPT WHICH ENABLES THE INTEGRATION OF A LARGE NUMBER OF LOW-POWER TRANSISTERS OR OTHER SOLID STATE DEVICES INTO A RESONANT RF CAVITY, FORMING A MONOLITHIC LIGHT-WEIGHT, HIGH-EFFECIENCY, HIGH-POWER STRUCTURE. THE LOW OPERATING VOLTAGE OF THE ARFC (10S OF VOLTS TO 100+ VOLTS) REDUCES THE COSTS OF HIGH-VOLTAGE POWER SUPPLIES AND POWER C ...

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QPM involves alternating regions of nonlinear material, such that efficient 3-wave mixing is achieved without conventional phase matching. If a practical implementation of QPM were developed, then harmonic generation (SHG/THG) from CO(2) laser radiation and mid-infrared (mid-IR) pumped optical parametric oscillators and amplifiers (OPOs/OPAs) would be able to produce broadly tunable radiation acro ...

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LASER ROCKET PROPULSION RESEARCH RECENTLY HAS DEMONSTRATED SUBSTANTIALPOTENTIAL FOR THE CONVERSION OF HIGH POWER LASER ENERGY INTO THERMAL PROPULSIVE ENERGY, USING EITHER CONTINUOUS OR PULSED MODE LASER SOURCES. IT IS NOW POSSIBLE FOR THE FIRST TIME TO DEVELOP PROTOTYPE DESIGNS FOR ACTUAL LASER PROPULSION THRUSTERS THAT CAN BE BUILT AND TESTED AT REALISTIC LASER POWERS. TO ACCOMPLISH THIS, PREVIOU ...

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SAFE, COST EFFECTIVE ALTERNATIVES TO CHLORINE TREATMENT OF DRINKING WATER FOR DISTRIBUTION AND DISINFECTION HAVE BEEN SOUGHT FOR SOME TIME. CHLORINE DIOXIDE IS A VIABLE ALTERNATIVE TO CHLORINE FOR THE TREATMENT OF EVEN POOR QUALITY WATER SUPPLIES AND THE REDUCTION OF POTENTIAL CANCER CAUSING CHLORINATED ORGANICS. ITS WIDESPREAD USE HAS BEEN INHIBITED BY THE COSTS AND/OR COMPLEXITY OF ITS PRODUCTIO ...

STATIONARY GAS ENGINES PRODUCE A DISPROPORTIONATELY LARGE SHARE OF THE TOTAL NOX EMISSIONS IN THE U.S., BUT NO AVAILABLE TECHNOLOGY OFFERS A SATISFACTORY MEANS OF REDUCING THEIR EMISSIONS. THESE ENGINES ARE PREDOMINANTLY TWO CYCLE AND PRODUCE AN EXHAUST HAVING A HIGH RATIO OF OXYGEN (O2) TO NITRIC OXIDE (NO). THUS, A SELECTIVE NO REDUCTION TECHNIQUE IS NEEDED WHICH CONVERTS THE NO TO NITROGEN (N2) ...