Abstract:SHIELDED CABLES USED WITHIN ARMY SYSTEMS PROVIDE PROTECTION TO ELECTRONIC EQUIPMENT AGAINST ELECTROMAGNETIC PULSE (EMP) RADIATION, ELECTROMAGNETIC INTERFERENCE EMI), AND OTHER EXTERNAL ELECTRIC OVER STRESS (EOS). HARSH OPERATING ENVIRONMENTS AND ABUSE DEGRADE THE SHIELDED CABLES WITH TIME.… more
Abstract:This program is to develop repetitive opening switches capable of switching average currents of kiloamps at voltages of hundreds of kV to MV's using a new class of liquid dielectrics. This family of liquids has very high drift velocity and low conduction losses for electrons within a particular… more
Abstract:1The Navy has a need for compact low frequency sonar sources for a wide range of applications. In particular, there is a need for low frequency high level signals generated from relatively small sonar transducers. This proposal is to develop an advanced form of the spark gap or plasma transducer… more
Abstract:THIS PROPOSAL DESCRIBES THE USE OF HOLOGRAPHIC INTERFEROMETRY TO STUDY BOTH THE MECHANICAL AND ELECTRICAL STRESS CHARACTERISTICS OF THIN POLYMER FILMS, SPECIFICALLY THOSE EXHIBITING ELECTROACOUSTICAL BEHAVIOR SUCH AS POLYUREAS AND POLYURETHANES. WE PROPOSE TO CORRELATE THE HOLOGRAPHIC FRINGE PATTERN… more
Abstract:POLLUTION OF THE ENVIRONMENT FROM HYDROCARBONS USED IN CONVENTIONAL REFRIGERATION SYSTEMS IS A SERIOUS THREAT. TO REDUCE THIS PROBLEM, REFRIGERATION SYSTEMS ARE PLANNED BASEDON THE USE OF HYDROGEN ABSORBED AND DESORBED BETWEEN TWO DIFFERENT METAL HYDRIDES. BECAUSE THESE MATERIALS STORE EXTREMELY… more
Abstract:ALTHOUGH THE SUBJECT OF AN EXTENSIVE TECHNOLOGY DEVELOPMENT PROGRAM, PROCESSES TO CREATE MULTIPLE FRACTURES HAVE FOUND LIMITED COMMERCIAL SUCCESS AS A METHOD FOR STIMULATING OIL AND GAS WELLS. IT IS HYPOTHESIZED THAT AN INACCURATE DESIGNMETHODOLOGY AND IMPROPER INTERPRETATION OF DEMONSTRATION FIELD… more
Abstract:MANY INDUSTRIAL PROCESSES ARE NOT CONTROLLED IN REAL TIME BECAUSE THEY LACK CONTROL SENSORS AND SYSTEMS SUITABLE FOR USE IN EXTREMELY HARSH ENVIRONMENTS. NEUTRON ACTIVATION ANALYSIS (NAA) IS A NON-INVASIVE TECHNIQUE THAT EXPOSES A SAMPLE TO NEUTRONS AND EXAMINES THE GAMMA RAYS EMITTED AS A RESULT OF… more
Abstract:AMMONIUM DINITRAMIDE (ADN) WAS INVENTED AT SRI INTERNATIONAL (MENLO PARK, CA) IN 1989. ITS DISCOVERY IS SIGNIFICANT IN THAT THEORETICAL CALCULATIONS PREDICT IT TO EXHIBIT BETTER PERFORMANCE AS AN ADVANCED ORDNANCE MATERIAL THAN MOST CLASSICAL NITRAMINE INGREDIENTS. A PROBLEM WITH ADN AT THE OUTSET… more
Abstract:CURRENT MOISTURE BARRIERS FOR AMMUNITION CONTAINERS CONSIST OF LAYERS OF ASPHALT IMPREGNATED PAPER AND ALUMINUM FOIL. ALUMINUM FOIL IS NOTED FOR ITS PINHOLE LEAKS. MOISTURE WILL DIFFUSE THROUGH ASPHALT IMPREGNATED PAPER. CONSEQUENTLY, MOISTURE-INDUCED CORROSION OF AMMUNITION AND DEGRADATION OF FUZE… more
Abstract:THE NEWEST SMALL ARMS SYSTEMS, 5.56 MM SQUAD AUTOMATIC WEAPON, WITH ITS TRACER CARTRIDGE HAS UNACCEPTABLE DAYLIGHT LUMINOSITY LEVELS. ANTICIPATED FUTURE SUBCALIBER SYSTEMS, WITH HIGHER SPIN RATES, FASTER VELOCITIES, AND SMALL ORIFICES, WILL PRESENT EVEN MORE CHALLENGING PROBLEMS TO PYROTECHNIC… more
Abstract:High performance graphite/resin composites have not realized their potential because they have poor interface-dependent mechanical properties that degrade by as much as 65% under hot-wet conditions. An RF-plasma/wet-chemistry fiber surface treatment is proposed to establish covalent bonding between… more
Abstract:The development of capacitor stores are dependent upon advances in low loss, high energy/high power density storage materials. A unique polymer material is proposed as a high energy density storage material. The molecular structure of the polymer will be engineered to achieve a high, nonlinear… more
Abstract:POSITRON EMMISSION TOMOGRAPHY (PET) IS ONE OF THE MOST PROMISING TECHNOLOGIES FOR DETAILED IMAGING OF ORGAN STRUCTURE AND DYNAMIC BIOLOGICAL PROCESSES IN THE BODY. ONE OF THE MOST IMPORTANT FACTORS DETERMINING THE PERFORMANCE CAPABILITIES OF PET SYSTEMS IS THE CHARACTERISTICS OF THE RADIATION… more
Abstract:1Titanium compressor blades suffer unacceptable erosion damage to solid impact. Polymeric protective coatings are ineffective in solid particle environments and are unable to withstand the high temperature environment of the T64 engine compressor. The broad damage area of compressor blades makes… more
Abstract:THE PROPOSED WORK WILL PROVIDE APPLICATION DATA AND PERFORMANCE DESCRIPTIONS OF ALTERNATIVES FOR HALON 1301 FOR AIRCRAFT FIRE PROTECTION AND HALON 1211 FOR GROUND FIRE FIGHTING IN NORMALLY OCCUPIED/UNOCCUPIED AREAS. RESEARCH WILL CONSIDER PHYSICALLY AND CHEMICALLY ACTIVE FIRE EXTINGUISHING AGENTS… more
Abstract:ION SOURCES BASED ON VACUUM ARC TECHNOLOGY HAVE SEVERAL IMPORTANT ADVANTAGES. THEY CAN GENERATE A WIDE VARIETY OF METAL IONS, PRODUCE HIGH CURRENT FRACTIONS OF MULTIPLY-CHARGED IONS, AND ARE EASY TO OPERATE. UNFORTUNATELY, EXISTING ARC SOURCES HAVE TECHNOLOGICAL DRAWBACKS. A STABLE DISCHARGE… more
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