Award Data

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A NUMBER OF LOW GRAVITY MATERIALS PROCESSING EXPERIMENTS SUCH AS CRYSTAL GROWTH STUDIES REQUIRE A SPECIALIZED OPTICAL SYSTEM CAPABLE OF FLOW VISUALIZATION. SEVERAL SUCH SYSTEMS HAVE BEEN BUILT FOR USE IN SPACE AND BALLISTIC AIRCRAFT FLIGHTS, INCLUDING SCHLIEREN SYSTEMS. HOWEVER, NO COLOR SCHLIEREN SYSTEM HAS BEEN DEVELOPED FOR THESE APPLICATIONS. A COLOR SCHLIEREN SYSTEM PRODUCES DATA MORE AMENABL ...

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Active clearance control promises considerable improvements in rotating component efficiencies and compressor surge margin. These improvements are essential to meet stringent performance requirements for next generation propulsion systems. The improvements are more pronounced for small engines, because clearance effect in small engines accounts for a bigger portion of rotating component losses tha ...

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THERE IS CURRENTLY GREAT DEMAND FOR A MATERIAL WITH SUPERIOR MECHANICAL PROPERTIES THAT CAN BE MAINTAINED TO HIGH TEMPERATURES. SILICON NITRIDE HAS BEEN IDENTIFIED AS ONE OF THE MOST PROMISING CERAMICS TO MEET THESE MATERIAL REQUIREMENTS. TO DATE, RESEARCH ON SI3N4 CERAMICS HAS RESULTED IN SUPERIOR ROOM TEMPERATURE PROPERTIES BUT RETENTION OF THESE PROPERTIES TO HIGH TEMPERATURES HAS NOT BEEN AC ...

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THE RECENT AVAILABILITY OF THE CARBON ICOSOHEDRAL MOLECULES, THE FULLERENES, AND THE DISCOVERY OF SUPERCONDUCTIVITY IN ALKALI DOPED FULLERENE DERIVATIVES OPENS NEW AVENUES OF INVESTIGATION INTO SUPERCONDUCTING DEVICES. IN PARTICULAR, THE FULLERIDES ARE PREDICTED TO ACHIEVE HIGH PERFORMANCE AS SUPERCONDUCTING BOLOMETERS. MOST OF THE CURRENT SUPERCONDUCTING INFRARED SENSORS HAVE UTILIZED BOLOMETRI ...

Fullerenes - the recently discovered pure carbon molecules - have a unique closed caged structure. This closed cage molecular structure bestows fullerene based solids with two important characteristics: first, an unprecedented lattice structure; and second, a molecular environment around fullerenes that is highly electronegative. The lattice structure of fullerene based solids consists of large oc ...

THERE IS A GROWING MARKET IN THE POWDER METALLURGY INDUSTRY FOR INTERMETALLIC POWDER WITH FINE PARTICLE SIZE AND GOOD COMPOSITIONAL CONTROL. A PROCESS TERMED PLASMA INITIATED SELF PROPAGATING HIGH TEMPERATURE SYNTHESIS (PSHS) IS PRESENTLY BEING DEVELOPED TO MEET THE GROWING DEMAND FOR SUCH POWDERS. HOWEVER, FOR SUCH A PROCESS TO COMPETE AGAINST THE EXISTING POWDER MANUFACTURING TECHNIQUES WOULD ...