Award Data

UNIFORM LARGE AREA, DEVICE QUALITY INDIUM PHOSPHIDE (INP) EPITAXIAL LAYERS ON INSULATING SUBSTRATES COULD LEAD TO THE DEVELOPMENT OF A NEW GENERATION OF PRODUCIBLE, RADIATION-HARDENED MICROELECTRONIC AND OPTOELECTRONIV INTEGRATED CIRCUITS. INP ALLOYS OFFER THE ADVANTAGES OF: PROVEN RESISTANCE TO RADIATION DAMAGE; LOWER SURFACE RECOMBINATION THAN GAAS; HIGH PEAK ELECTRON VELOCITY; AND BANDGAPS THAT ...

HIGH TEMPERATURE (>600 DEGREES CELSIUS) INDIUM PHOSPHIDE (INP) SPACE SOLAR CELLS ARE BEING DEVELOPED TO ELIMINATE THEPROBLEMS, SURFACE DECOMPOSITION AND CONTACT FAILURE, ENCOUNTERED WHEN INP SOLAR CELLS ARE EXPOSED TO HIGH TEMPERATURES. KEY TO THIS PROGRAM ARE THE USE OF AN ENCAPSULANT LAYER TO ARREST SURFACE DECOMPOSITION AND A HIGHLY-STABLE INTERMEDIATE DEGENERATE SEMICONDUCTOR CONTACT SYSTEM DE ...

A CONSOLIDATED INTELLIGENT CONTROL UNIT (CICU) IS CONCEPTUALIZED FOR CONTROL OF MULTIPLE ROBOTIC COMBAT VEHICLES FROM A SINGLE RRC. WHILE A CONTROL STRATEGY WILL BE DESIGNED FOR CONTROL FUNCTIONS COMMON TO ALL MISSIONS, SPECIAL CONTROL TECHNIQUE WILL BE USED FOR MISSIONSPECIFIC CONTROL. THE DESIGN OF THE CICU IS BASED ON HIERARCHICAL AND MODULAR COMBINATION OF APPLICABLE CONTROL TECHNOLOGIES, REDU ...

THE MISSION AND PERFORMANCE REQUIREMENTS OF U.S. ARMY AIRCRAFT ARE CONTINUALLY BECOMING MORE STRINGENT. TO MEET THESE MMORE DEMANDING REQUIREMENTS, SIGNIFICANT WEIGHT REDUCTIONS MUST BE MADE. THE USE OF COMPOSITE MATERIALS IN PRIMARY AIRCRAFT STRUCTURES IS ONE OF THE TECHNOLOGIES BEING DEVELOPED TO HELP MEET THESE GOALS. WHILE THE TECHNOLOGY TO INCORPORATE ADVANCED COMPOSITES INTO PRIMARY AIRCRAFT ...

INCREASES IN SOLAR CELL EFFICIENCY CAN BE ACHIEVED WITH TANDEM MULTI-JUNCTION STRUCTURES TO IMPROVE THE PERFORMANCE AND SCALE OF SPACE PHOTOVOLTAIC CONCENTRATORS. THE "TOP SOLAR CELL" TANDEM APPROACH COULD INCREASE ENERGY CONVERSION EFFICIENCY BY AS MUCH AS 100%. A SELF-SUPPORTING ALUMINUM-GALLIUM-ARSENIDE (ALGAAS) TOP SOLAR CELL IS BEING DEVELOPED FOR MECHANICAL ATTACHMENT TO A SILICON CONCENTRAT ...

EXISTING METALLIC-TYPE CONTACTS ON GALLIUM ARSENIDE (GAAS) HAVE NOT BEEN STABLE AT HIGH TEMPERATURES BECAUSE OF INTERDIFFUSION AND/OR ALLOYING OF THE GAAS TOP LAYER. HIGH TEMPERATURE CONTACTS TO GAAS SPACE PHOTOLTAIC CELLS ARE BEING DEVELOPED BASED ON THE FORMATION OF A HIGHLY-STABLE INTERMEDIATE DEGENERATE SEMICONDUCTOR LAYER BETWEEN THE GAAS AND A HIGH TEMPERATURE METAL ALLOY. THE INTERMEDIATE S ...

A HYPERGOLIC FUEL INJECTOR IS DESCRIBED THAT ENABLES MULTIFUEL OPERATION, LOWER FUEL CONSUMPTION, AND ENHANCED ALL WEATHER STARTING FOR INTERNAL COMBUSTION ENGINES. THE DEVICE EMPLOYS A NOVEL DUAL FUNCTION HIGH PRESSURE PUMP PERMITTING THE TRANSPORT OF HEATED FUEL IN A FUEL INJECTOR SUITABLE FOR USE IN SUCH ENGINES. HIGH TEMPERTURE AND VERY HIGH PRESSURE FUEL IS DELIVERED TO THE COMBUSTION SPACE O ...

MANIKINS ARE CURRENTLY FABRICATED WITH A SKELETON OF METAL "BONES" WHICH PROVIDE THE STRUCTURAL STRENGTH REQUIRED TO WITHSTAND THE REPEATEDLY HIGH ACCELERATIONS AND LOADS OF DYNAMIC TESTING. SUCH METAL STRUCTURES, HOWEVER, DO NOT EXHIBIT PROPER SEGMENT INERTIAL DISTRIBUTION OR LOAD-DEFORMATION PROPERTIES, WHICH MAKES IT DIFFICULT TO DESIGN MANIKINS FOR BIOFIDELIC RESPONSE. FOR THIS REASON, IT IS P ...

THIS PROPOSAL IS AIMED AT TESTING THE FEASIBILITY OF A NEW AND INNOVATIVE IDEA FOR THE PRODUCTION OF LAYERED SEMICONDUCTOR DEVICE STRUCTURES, SUCH AS GALLIUM ARSENIDE-GALLIUM ALUMINUM ARSENIDE. THE EPITAXIAL GROWTH WILL BE DONE BY THE PROCESS OF INDIRECT PLASMA ENHANCED LOW PRESSURE METAL ORGANIX CHEMICAL VAPOR DEPOSITION UNDER THE INFLUENCE OF A MAGNETIC FIELD APPLIED TO THE GROWING LAYER. IT IS ...

THE COMPLETE DESIGN IS PRESENTED WITHIN THIS PROPOSAL FOR A SYSTEM WHICH WILL PROVIDE A PRECISE, ONE-STEP CONVERSION DIRECTLY FROM A PULSE TRAIN INPUT TO A DIGITIZED PULSE RATE OUTPUT. IT IS A DISTRIBUTED PROCESSOR SYSTEM EMPLOYING A MASTER CONTROL PROCESSOR AND FROM 2 TO 30 IDENTICAL PULSE MODULES. THE PULSE MODULE IS A STANDALONE UNIT WHICH PERFORMS THE PULSE PERIOD MEASUREMENT. THE MICROPROCESS ...