Abstract:THE PROPOSED RESEARCH ADDRESSES THE DEVELOPMENT OF SEVERAL DIFFERENT TYPES OF REFRACTORY BRAZING FILLERS AND EVALUATION OF THEIR PROPERTIES FOR HIGH TEMPERATURE AND LOW VAPOR PRESSURE APPLICATIONS. REFRACTORY METALS AND ALLOYS ARE OMNIPRESENT IN NUCLEAR SPACE REACTOR ASSEMBLIES. JOINING AND BONDING… more
Abstract:The objective of this proposal is to develop surface preparation method for aircraft grade aluminum alloys for adhesive bonding using sol-gel processes. Low temperature phase y-Al2-O3 coatings will be prepared on aluminum alloys by sol-gel processing. The problem of drying and sintering of gels on… more
Abstract:Threaded fasteners used in turbine engine experience seizing/galling problems due to exposure at high temperature, corrosive environment and vibration. A research program is proposed that includes determination of the mode of failure of the currently used fastener-coating systems, and evaluation of… more
Abstract:Crevice corrosion is a form of localized corrosion that occurs within crevices or at sheiled surfaces where stagnant solution is present. Crevices corrosion is particularly problematic for the Navy in networks of seawater piping where the numerous gasketed junctions are susceptible to crevice… more
Abstract:LANDFILL GAS (LFG), COMPRISED OF METHANE (CH4) AND CARBON DIOXIDE (CO2) IN ROUGHLY EQUAL PROPORTIONS ALONG WITH MYRIAD TRACE CONTAMINANTS, IS NOW ESSENTIALLY A WASTED RESOURCE THAT COULD PROVIDE LOCALLY SIGNIFICANT SUPPLEMENTALENERGY. LFG HAS BOTH EXPLOSIVE AND TOXIC PROPERTIES THAT MUST BE… more
Abstract:Although satellite-based SAR is sensitive enough to pick up the modulation effects of internal waves, the signal-to-noise ratio (SNR) of th-Ls observable is believed to be to() low to afford detection of enemy sukuiarines . Adaptive Software prolses that with a new interpretation of singular value… more
Abstract:THE ITAP REQUIRES ADVANCED TECHNOLOGY IN FABRICATION AND IN TEAM INTERACTION AS WELL. WE HAVE ASSEMBLED A CAPABLE TEAM, EAGER TO ACCOMPLISH THIS TASK. THE TECHNOLOGY FOR AIRFRAME CONSTRUCTION INVOLVES ADVANCED USE OF VACUUM FORMED GLASS AND CARBON FIBER REINFORCED EPOXY SKINS ON A ROHA-CELL PVC FOAM… more
Abstract:TWO METHODOLOGIES FOR INCREASING THE EFFICIENCY AND EFFECTIVENESS OF COMPUTER ANALYSIS OF AEROSPACE STRUCTURES WILL BE ADDRESSED. THE APPROACH INCORPORATES FUNCTIONAL-LINK, NEURAL-NET TECHNOLOGY FOR GENERALIZATION OFQUANTITATIVE ANALYSIS RESULTS (SO AS TO CIRCUMVENT THE NEED FOR EXTENSIVE,… more
Abstract:THE UNDERSTANDING OF PROTEIN FUNCTION IS GREATLY ENHANCED BYTHE AVAILABILITY OF THREE-DIMENSIONAL STRUCTURAL INFORMATIONOBTAINED BY X-RAY CRYSTALLOGRAPHY. THIS IS TRUE FOR MEMBRANE AS WELL AS WATER-SOLUBLE PROTEINS, BUT THE LARGE, WELL-ORDERED THREE-DIMENSIONAL CRYSTALS REQUIRED FOR X-RAY ANALYSES… more
Abstract:IT HAS BEEN ESTIMATED THAT APPROXIMATELY A HALF-MILLION PATIENTS ACQUIRE URINARY TRACT INFECTIONS IN ACUTE CARE HOSPITALS IN THIS COUNTRY EVERY YEAR. THE USE OF THE URINARY CATHETER HAS BEEN CITED AS THE MAJOR CAUSE FOR SUCH INFECTIONS, THE MOST NUMEROUS OF ALL NOSOCOMIAL INFECTIONS. THIS TREND OF… more
Abstract:This Phase I SBIR will investigate the feasibility of producing reliabMICONDUCTOR, MICROWAVE AND MICROELECTRONIC DEVICES ARE DRIVING THERMALle High-Resolution Satellite Cloud Climatologies (HRSCC's) from meteor PROPERTY REQUIREMENTS FOR ELECTRONIC PACKAGING MATERIALS AND DESIGNS.ological satellite… more
Abstract:If you can't beat them, join them. Such is the philosophy of Space Exploration Associates, who hired the top talent in Russian and the new Republic of Georgia to develop advanced thermionic converters for SDIO. Unlike other highly publicized exchanged with the Russians, this work will be done in the… more
Abstract:A THERMIONIC FUEL ELEMENT (TFE) BASED ON ADVANCED URANIUM CARBIDE (UC) SOLID SOLUTION FUEL WITH RHENIUM EMITTER CLADDING SHOULD ALLOW MUCH BETTER PERFORMANCE THAN PRESENT DESIGNS. THE FUEL FORM WOULD BE A LONG, THIN, HOLLOW "VERMICELLI" SHAPE TO ALLOW VERY COMPACT REACTORS TO BE DESIGNED, DESPITE… more
Abstract:COMPOSITE MATERIALS ARE ATTRACTIVE FOR USE IN AIRCRAFT AND SPACECRAFT OWING TO PROPERTIES OF HIGH SPECIFIC STRENGTH. A PROBLEM CONFRONTING THE APPLICATION OF COMPOSITE MATERIALS FOR ROTORCRAFT IS THAT UNIMPROVED LANDING AREAS, AS WELL AS LOW ALTITUDE MISSIONS, RESULT IN SEVERE ABRASION OF THE… more
Abstract:A COLD CATHODE CAPABLE OF DELIVERING SEVERAL HUNDRED AMPS PER SQUARE CENTIMETER (UNDER AMBIENT CONDITIONS WITHOUT THE INTRODUCTION OF CESIUM VAPOR) WOULD BE VALUABLE FOR A NUMBER OF APPLICATIONS IN HIGH POWER HIGH FREQUENCY ELECTRONICS. ONE OF THE MOST HIGHLY SOUGHT APPLICATIONS IS THAT OF CATHODE… more
Abstract:Everybody knows that composites have high strength, low density, and great thermal properties. They would be great for a number of applications such as fins for spacecraft radiators. So why aren't they used more on spacecraft thermal systems? One reason is joining technology. Although many methods… more
Abstract:THE PRIMARY OBJECTIVE OF THIS PROPOSED PHASE I PROGRAM IS TO PROVIDE A STABLE DELIVERY SYSTEM FOR ENERGETIC MATERIAL(S) WHICH IS DESIGNED TO RELEASE ITS CONTENTS, ON DEMAND, IN SELECTED HOSTILE ENVIRONMENTS. INITIAL EFFORTS WILL FOCUS ON THE DEVELOPMENT OF THE MOST FEASIBLE METHOD(S) FOR… more
Abstract:A PH I RESEARCH PROGRAM IS PROPOSED TO DEVELOP BASELINE THERMAL DATA FOR DIELECTRIC MATERIALS IN THE RANGE 20 TO 77K FOR THERMAL-MANAGEMENT APPLICATIONS WITH THE NEW HIGH TEMPERATURE CERAMIC SUPERCONDUCTORS. THESE CERAMIC SUPERCONDUCTORS ARE BEING CONSIDERED FOR A 1 MW AIR FORCE GENERATOR. CANDIDATE… more
Abstract:JAPANESE RESEARCHERS HAVE RECENTLY DEVELOPED ER-BASED ALLOYS THAT HAVE LARGE SPECIFIC HEATS BELOW 15K, AND HAVE DEMONSTRATED IMPROVED REGENERATOR PERFORMANCE USING THESE MATERIALS. THESE ALLOYS, HOWEVER, ARE VERY EXPENSIVE AND BRITTLE. THIS PROJECT FOCUSES ON INEXPENSIVE CERAMICS THAT HAVE MUCH… more
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