Abstract:METAL MATRIX COMPOSITES (MMC), WITH THEIR HIGH THERMAL CONDUCTIVITY, LIGHT WEIGHT, EMI SHIELDING, AND TAILORABLE COEFFICIENT OF THERMAL EXPANSION (CTE) ARE THE EMERGING MATERIALS OF CHOICE FOR HEAT SINK, CONSTRAINING CORE, AND PACKAGING APPLICATIONS. AFFORDABLE AND TIMELY MANUFACTURING METHODS ARE… more
Abstract:A NOVEL TECHNIQUE FOR THE SYNTHESIS OF NANOCRYSTALLINE SILICON CARBIDE (SIC) POWDERS IS PLANNED STARTING WITH A SILICON-BASED PRECURSOR AND FULLERENE COMPOUNDS AS THE RAW MATERIALS. THE REACTIVITY OF FULLERENES, COMBINED WITH PREVIOUSLY DEMONSTRATED RESULTS IN THE SYNTHESIS OF LIMITED QUANTITIES OF… more
Abstract:ONE DIMENSIONAL CARBON-CARBON (-C) COMPOSITES ARE CONSIDERED AS CANDIDATE TILE MATERIALS FOR DIVERTER APPLICATIONS DUE TO THEIR HIGH THERMAL CONDUCTIVITY. UNFORTUNATELY, SUCH COMPOSITES ALSO SUFFER FROM EXTREMELY POOR CROSS-FIBER TENSILE STRENGTH. THE PROBLEM OF BONDING DISPERSIVE STRENGTHENED… more
Abstract: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… more
Abstract:M-DOT, INC. ("M-DOT") PROPOSES TO DESIGN, FABRICATE AND TEST A PROPELLER DRIVE GEARBOX, TURBINE AND GOVERNOR SYSTEM FOR ATTACHMENT TO A LOW COST EXPENDABLE TURBOJET ENGINE. THE SYSTEM WILL BE DESIGNED FOR APPLICATION ON THE SUNSTRAND TJ-90 ENGINE AND WILL UTILIZE EXISTING AND PROVEN TECHNOLOGIES.… more
Abstract:M-Dot, Inc. ("M-DOT") proposes to design, fabricate and test a thrust augumentation system for low cost expendable turbojet engines. The system will be designed for application on the Sunstrand TJ-90 engine and will utilize existing and proven technologies. The system will consist of the following:… more
Abstract:We will develop and characterize a common-path or Sagnac interferometer with CCD array detector that can be used as a space-borne or field spectrometer from the UV to the IR region of the spectrum. The specific innovation is that the entire interferometer assembly (beamsplitter, mirrors, lens, and… more
Abstract:OPTICAL FIBERS CAN BE DEVELOPED TO TRANSMIT INTENSE LASER RADIATION THROUGH SELECTIVE CHOICE OF MATERIALS AND DESIGN PARAMETERS FOR THE FIBERS IN THE WAVELENGTH RANGE OF 0.193-10.6 MICRON. THESE FIBERS CAN BE INCORPORATED INTO DELIVERY SYSTEMS FOR PROGRAMMED DELIVERY OF LASER ENERGY AND INTEGRITY… more
Abstract:THE SOLUBILITY OF AIRBORNE RADIONUCLIDES IS AN IMPORTANT PARAMETER IN THE ASSESSMENT OF INHALATION HAZARDS IN THE WORKPLACE AND IN THE INTERPRETATION OF ROUTINE BIOASSAY DATA. SOLUBILITY IS A MAJOR FACTOR IN DETERMINING THE METABOLISM OF THE INHALED ISOTOPES AND DISSOLUTION RATES OF ALPHA-EMITTING… more
Abstract:The ultimate aim of this research is the development of an instrument capable of detecting and measuring the presence of an electrostatic field created by local static electric charge. The sensor operates on a physical principle not yet exploited for field measurement. The final instrument will be… more
Abstract: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,… more
Abstract:Propulsion subsystems of future flight vehicles will run to higher thermal and aerodynamic loads for increased efficiencies. Increased loading and operating requirements cause serious mismatch between stages and components during off-design conditions with attendant compromise on stability margin.… more
Abstract:Work by M. Binder and the army ETDL has shown that the RF plasma treatment of capacitor films, electrode foils and wound rolls, can result in significant and in some cases dramatic improvements, in the electrical breakdown strength of certain capacitor films and capacitor rolls. In this… more
Abstract:ADDRESSING THE NEED FOR INCREASINGLY LIGHTER STRUCTURAL COMPOSITES WITH IMPROVED THERMAL AND ELECTRICAL PROPERTIES, A NEW METHOD IS PROPOSED FOR THE PRODUCTION OF ECONOMICAL HIGH TEMPERATURE POLYMER-METAL COMPOSITES. THESE MATERIALS ARE PRODUCED BY A PATENTED ULTRA HIGH SPEED VACUUM PROCESS, THAT… more
Abstract: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… more
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