Abstract:MULTI-DIMENSIONAL ADAPTIVE PROCESSING TECHNIQUES ARE PROPOSED TO DETECT LOW OBSERVABLE AIR-BORNE TARGETS IN DIFFICULT JAMMING AND CLUTTER ENVIRONMENT. THE PROBLEMS OF STRONG SIDELOBE JAMMING, MAIN-BEAM CLUTTER, SIDE-LOBE CLUTTER, RANGE/DOPPLER SPREAD OF CLUTTER, JAMMING GENERATED TERRAIN SCATTERED… more
Abstract:THE OBJECTIVE OF THE PHASE I RESEARCH PROJECT IS TO PRODUCE A NEW TYPE OF X-RAY DETECTOR FOR USE IN X-RAY ABSORPTION SPECTROSCOPY (XAS) EXPERIMENT AT SYNCHROTRON SOURCES. PRESENT XAS STUDIES ARE LIMITED BY EXISTING DETECTORS. THE PLANNED DETECTOR SYSTEM WOULD CONSIST OF AN ARRAY OF SILICON DETECTORS… more
Abstract:An intelligent, redundant end effector is proposed for use as part of an intelligent automation system. The end effector is compact, lightweight, and provides up to six degrees of freedom over a limited workspace. The design is modular being composed of a number of interchangeable linear actuators… more
Abstract:The purpose of this study is to explore and develop the best candidate attitude control system to maximize the FFRRV flight envelope and handling qualities for various rotorcraft configurations. The intent is to provide a controls design methodology which allows hardware and software… more
Abstract:THE CURRENT REFRIGERANTS USED IN THE VAPOR CYCLE SYSTEMS ARE SCHEDULED TO BE PHASED OUT AND REPLACED WITH REFRIGERANTS THAT ARE ENVIRONMENTALLY LESS HAZARDOUS. THESE REFRIGERANTS ARE BEING DEVELOPED TO REPLACE THOSE CURRENTLY EMPLOYED IN RESIDENTIAL AND COMMERCIAL APPLICATIONS AND WILL ALSO FIND USE… 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:THE MIT DEVELOPED PRESSURE INFILTRATION CASTING PROCESS RESULTS IN NEAR ABSOLUTE NET-SHAPE COMPONENTS DUE TO ITS INHERENT CONTROL OF CASTING PARAMETERS, PRECISION OF TOOLING MANUFACTURING, DIMENSIONAL CONTROL OF TOOLING, AND THE ABILITY TO FILL THIN SECTIONS IN REINFORCED Al AND Mg MATRIX COMPONENTS… more
Abstract:CERTAIN PREPIPITATION HARDENABLE MMC MATRIX ALLOYS DISPLAY MORE RAPID COARSENING AT FIBERMATRIX INTERFACES THAN WITHIN THE MATRIX. UPON AXIAL LOADING, THE PRECIPITATES SERFE AS STRESS INTENSIFERS IN THE PLANE OF THE INTERFACE. THE INTERFACE IS WEAKENED BY REDUCING THE WORK OF DECOHESION, Wd. THIS… more
Abstract:THE LONG-TERM OBJECTIVE OF THIS RESEARCH IS TO DEVELOP AN AFFORDABLE MICROWAVE RADIOMETRIC SYSTEM FOR NON-INVASIVE IMAGING OF TISSUE TEMPERATURES. THE AIMS OF THE PHASE I RESEARCH ARE AS FOLLOWS: 1) EVALUATE THE ABILITY OF A NOVEL SINGLE-BAND MICROWAVE RADIOMETER DEVELOPED BY US TO DISCRIMINATE… more
Abstract:The objective of this program is to develop, analyze, and assess the performance of a system for locating the position of HF and VHF transmitters using energy from these transmitters that incidentally scatters from metor trails. The proposal presented a candidate algorithm for meteor scatter… more
Abstract:The long term objective of this research is to develop high performance instrumentation for multiple channel neuronal waveform acquisition and data analysis. This plan builds on the Multichannel Neuronal Acquisition Processor (MNAP) hardware platform capable of acquiring spike intervals, waveforms… more
Abstract:A high power low frequency, frequency bandwidth control ultrasonic sector B-scan system with specially designed sector scan transducers is proposed for the internal or under water one-sided inspection of thick (at least 3") composite components with complex surface shapes. This technique is based on… more
Abstract:HOT GAS PARTICULATE FILTRATION IS CRITICAL TO NEARLY EVERY CLEAN COAL ENERGY CONVERSION TECHNOLOGY. TO DATE, CERAMIC FILTERS HAVE EXHIBITED LIMITED LIFE AND RELIABILITY BECAUSE OF THERMAL SHOCK, THERMAL STRESS, AND CORROSION REACTIONS WITH COAL ASHCONSTITUENTS. OXIDE FIBER-OXIDE MATRIX CERAMIC… more
Abstract:High speed combined cycle propulsion systems have several subsystems in common including the need for a method through which the exhaust nozzle area can be varied to meet the range of altitudes and velocities within a given systems' flight envelope. The extremely high temperatures and limited… more
Abstract:LEAKS IN CRYOGENIC TRANSFER LINES CAUSE LOSS OF VACUUM INSULATING PROPERTIES. OPERATIONAL REQUIREMENTS DICTATE THE DEVELOPMENT OF A REPAIR PROCESS IN PLACE. COMPONENT MATERIALS AND OPERATIONAL ENVIRONMENTS IMPOSE SEVERE IMPEDIMENTS TO ADHESIVE MECHANISMS FOR REPAIR MATERIALS. A CERAMIC COATING IS… more
Abstract:THE NAVY HAS A GROWING SURPLUS INVENTORY INVOLVING PROPELLANTS, EXPLOSIVES AND PYROTECHNICS (PEP). INCREASING PROHIBITIONS ON DISPOSAL METHODS REQUIRES INCREASED ATTENTION BE GIVEN TO REUSE APPLICATIONS.ONLY LIMITED WORK HAS PREVIOUSLY ADDRESSED ENERGY RECOVERY, COMMODITY RECOVERY AND REUSE… more
Abstract:IN THE TREATMENT OF THE DYNAMIC PROBLEMS OF STRUCTURES, TWO ALTERNATE TESTING METHODS, BASED ON EXTERNAL AND EMBEDDED SENSORS, EXIST IN THE LITERATURE. IF THE SENSORS RESPOND TO THE CHANGES IN THE DYNAMIC CHARACTERISTICS OF THE STRUCTURE, AND/OR THE ENVIRONMENT, THEN THEY ARE REFERRED TO "SMART"… more
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