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IT IS PROPOSED TO DEVELOP NEW OR IMPROVED ON KNOWN GRADIENT CERAMIC/ METALLIC COATINGS FOR APPLICATION ON DIESEL IRON OR STEEL PISTONS CAPABLE OF WITHSTANDING 2000 DEF F COMBUSTION TEMPERATURES AND PROVIDING SIGNIFICANT THERMAL BARRIERS. THE TREND OF DIESEL ENGINE DEVELOPMENT AND PARTICULARLY THE LOW HEAT REJECTION (ADIABATIC) ENGINES TOWARDS HIGHER PISTON HEAD TEMPERATURES REQUIRES THE USE OF THE ...

VARIOUS RADAR AND TARGET SEEKER SYSTEMS ARE BEING DEVELOPED TO OPERATE AT MILLIMETER SYSTEMS. LOW COST, HIGHLY RELIABLE FRONT END HARDWARE IS REQUIRED FOR THESE MUNITIONS. DIELECTRIC INSULAR WAVEGUIDE PLANAR INTEGRATED CIRCUITS FOR THIS PURPOSE WERE DESCRIBED INITIALLY BY EPSILON LAMBDA PERSONNEL IN 1970. SOME OF THESE RADARS ARE OF THE FM-CW TYPE, AND THIS PROPOSAL ADDRESSES THE NEED FOR DEMONSTR ...

THE PERFORMANCE OF DEVICES AND INTEGRATED CIRCUITS USING SELECTIVELY DOPED HETEROSTRUCTURE TRANSISTORS (SDHT) HAS INCREASED DRAMATICALLY IN THE PAST YEARS. A LARGE PART OF THAT PERFORMANCE IMPROVEMENT IS DUE TO THE REDUCED FEATURE SIZE OF THE GATE ELECTRODE. RECORD SWITCHING TIMES (6 PS) HAVE BEEN ACHIEVED USING GATE LENGTHS OF 0.3 MICROMETERS (UM). SHORTER GATE LENGTHS POTENTIALLY WILL HAVE EVEN ...

THE USE OF CONTINUOUS AND PULSED WAVE LASERS IN TARGET DESIGNATION AND COMBAT SITUATIONS IS INCREASING. THERE IS THEREFORE A NEED TO PROTECT COMBAT PERSONNEL AND SENSITIVE SENSING EQUIPMENT FROM ACCIDENTAL EXPOSURE TO LASER RADIATION. THE TECHNICAL OBJECTIVES OF THIS PROGRAM ARE TO DEVELOP, CHARACTERIZE AND TEST A LASER FILTER WHICH REMAINS TRANSPARENT AT AMBIENT LIGHT FLUXES, BUT WHICH COULD BE S ...

IT IS PROPOSED TO REDUCE VIBRATION-INDUCED PHASE NOISE IN CRYSTAL OSCILLATORS BY A COMPACT ARRANGEMENT OF ACTIVE MOUNTINGS. SUCH MOUNTINGS ARE ENVISAGED AS PIEZOELECTRIC BENDER ELEMENTS ARRANGED SO THAT VIBRATIONS OF A BRAOD BANDWIDTH AND MODERATE AMPLITUDE ARE ABSORBED IN 1 TO 3 AXES. WHILE THE MOST CONSERVATIVE ARRANGEMENT WOULD REQUIRE AN ELECTRONIC CONTROL AND AMPLIFIER (PRESUMABLY MONOLITHIC) ...

THIS PROPOSAL DESCRIBES THE EXTENSION OF DIGITAL SPECTROMETRY TO THE MEASUREMENT OF THE ANISOTROPIC PERMITTIVITIES OF PIEZOELECTRIC MATERIALS. WE SHOW THAT FRESNEL'S EQUATIONS FOR ANISOTROPIC MEDIA, AS IS THE CASE WITH ISOTROPIC MEDIA, ALSO SIMPLIFY FOR AN INCIDENT ANGLE OF 45 DEG. IN DIGITAL SPECTROMETRY FOR ISOTROPIC MEDIA THE SAMPLE IS FIXED AND THE POLARIZATION STATE OF THE INCIDENT BEAM IS RO ...

THE LACK OF HIGH-RELIABILITY SOFTWARE IS A MAJOR PROBLEM IN THE MILITARY AND COMMERCIAL COMMUNITIES TODAY. TRADITIONAL V&V TECHNIQUES IMPROVE SOFTWARE RELIABILITY BY HELPING TO FIND ERRORS EARLY IN SOFTWARE DEVELOPMENT, BUT WE NEED TO GO BEYOND THESE TECHNIQUES TO FIND A WAY TO PREVENT ERRORS FROM OCCURRING IN THE FIRST PLACE. PEI HAS BEEN USING ERROR PREVENTION CONCEPTS IN A FRONT END TESTING APP ...

THE INTENT OF THIS WORK IS TO DEVELOP AN ADVANCED ESTIMATED ALGORITHM FOR MANEUVERING TARGET STATE ESTIMATION AND PREDICTION FOR FIRE CONTROL AND TO DEVELOP A DESIGN OF A VHSIC SYSTOLIC ARRAY FOR IMPLEMENTATION OF THE ALGORITHM. THE DESIGN OF THE ALGORITHM WILL CONSIDER MANEUVERING TARGETS INCLUDING AIRCRAFT AND HELICOPTERS. IT WILL INCLUDE THE USE OF ADVANCED SENSOR INFORMATION SUCH AS AN IMAGERY ...

A REQUIREMENT EXISTS TO PROVIDE OCULAR PROTECTION TO TROOPS AT RISK FROM LASER ENERGY EXPOSURE AND BALLISTIC FRAGEMENTS WHILE MAINTAINING ESSENTIAL VISUAL PERFORMANCE. OPTICAL FILTERS BASED ON HOLOGRAPHIC MIRRORS OR THIN FILM INTERFERENCE FILTERS ARE EFFECTIVE IN BLOCKING LASER BEAMS BUT ARE FRAGILE AND ARE SUBJECT TO DEGRADATION FROM AMBIENT MOISTURE. THIS LABORATORY PROPOSES TO MAKE THIN FILM IN ...

THE NEED EXISTS FOR AN INTERFACE BETWEEN EXISTING TACTICAL RECORD TRAFFIC NETWORKS AND A PROPOSED WIDE-AREA TACTICAL PACKET SWITCHING NETWORK (TPN). THESE RECORD TRAFFIC NETWORKS INCLUDE THE AN/TYC-39 MESSAGE SWITCH (MS) AND THE MOBILE TACTICAL COMMUNICATIONS CENTER (MTCC). THE TPN IS TO BE PART OF THE MOBILE SUBSCRIBER EQUIPMENT (MSE), AND IS ASSUMED TO INTERFACE AND SHARE PROTOCOLS WITH THE DEFE ...