Award Data

CAPACITOR TECHNOLOGY IS A MAJOR DRIVER FOR THE SIZE AND COST OF MANY SPACE POWER CONDITIONING SYSTEMS. CURRENT TECHNOLOGY FOR HIGH VOLTAGE (>100V), HIGH FREQUENCY (HIGH REP RATE) CAPACITORS IS LIMITED TO AN ENERGY DENSITY LESS THAN 7500 J/M3. WE ARE PROPOSIING A REVOLUTIONARY CAPACITOR TECHNOLOGY WHICH PROMISES TO INCREASE CAPACITOR ENERGY DENSITIES BY AFACTOR OF MORE THAN 100. IN MANY APPLICATION ...

THE PROPOSED PROGRAM USES POLARIZATION REVERSAL ON FERROELECTRIC MATERIALS THAT YIELD CURRENT DENSITIES IN THE kA/cm2 RANGE. THE FAST CHANGE IN THE POLARIZATION VECTOR WITHIN THE MATERIAL RESULTS IN A TRANSITION THAT LIBERATES THE POLARIZATION INDUCED CHARGES (4 P) RESULTING IN A CURRENT PULSE LIMITED ONLY BY THE TRANSITION TIME AND SPACE CHARGE EFFECTS. THE PROPOSED PROGRAM WILL DEVELOP THE TECHN ...

A NOVEL MILLIMETER WAVE TERMINAL GUIDANCE IS PROPOSED, WHICH IS UNIQUELY SUITABLE FOR SMALL SPINNING PROJECTILES. THIS GUIDANCE CONCEPT DOES NOT REQUIRE INERTIAL COMPONENTS. IT UTILIZES THE INHERENTINERTIAL PROPERTIES OF PROJECTILE SPIN NUTATION. THE CONCEPT CAN BE IMPLEMENTED WITH VERY LOW WEIGHT AND VOLUME, AND PROMISES PROJECTILE COST SAVINGS OF AN ORDER OF MAGNITUDE. APPLICATIONS OF THIS NOVEL ...

NEW TECHNOLOGIES ARE REQUIRED FOR THE DETECTION AND IMAGING OF VISIBLE LIGHT, GAMMA RAYS AND NEUTRONS IN HIGH RADIATION ENVIRONMENTS SUCH AS THOSE ENCOUNTERED IN SPACE. CURRENTLY AVAILABLE, CRYSTALLINE SILICON DETECTOR ARRAYS SUCH AS CHARGE COUPLED DEVICES (CCD) ARE EXTREMELY SUSCEPTIBLE TO RADIATION DAMAGE AND A FEW KILORADS OF HIGH ENERGY PROTONS CAN SERIOUSLY DEGRADE PERFORMANCE IN A MATTER OF ...

N/A

OPTICS USED IN SENSORS OR MISSILE SYSTEMS ARE MADE FROM SAPPHIRE, OR SILICON CARBIDE BECAUSE OF THEIR EXCELLENT OPTICAL OR INSULATING PROPERTIES, THEIR INERT, AND THEIR ABILITY TO RESIST HARSH ENVIRONMENTS. POLISHING SAPPHIRE BY MECHANICAL OR MECHANOCHEMICAL METHODS INDUCES RESIDUAL DAMAGE AND LIMITS THE OVERALL SURFACE ROUGHNESS (USUALLY AROUND 1 MICROINCH). THIS ROUGHNESS PRODUCES SCATTERING CEN ...

THE PROPOSED RESEARCH ATTEMPTS TO DEVELOP AN ADVANCED CAPACITOR USING SiC FOR HIGH TEMPERATURE (400 0C), HIGH POWER, AND HIGH DENSITY ELECTRONIC COMPONENTS FOR AIRCRAFT OR AEROSPACE APPLICATION. THE CONVENTIONAL CAPACITOR CONSISTS OF A LARGE NUMBER OF METALLIZED POLYSULFONE FILM CAPACITORS IN PARALLEL ENCLOSED IN A HERMETICALLY SEALED METAL CASE. PROBLEMS WITH ELECTRICAL FAILURE THERMAL FAILURE AN ...

THE PROPOSED RESEARCH ADDRESSES THE DEVELOPMENT OF SEVERAL DIFFERENT TYPES OF REFRACTORY BRAZING FILLERS AND EVALUATION OF THEIR PROPERTIES FOR HIGH TEMPERATURE AND LOW VAPOR PRESSURE APPLICATIONS. REFRACTORY METALS AND ALLOYS ARE OMNIPRESENT IN NUCLEAR SPACE REACTOR ASSEMBLIES. JOINING AND BONDING PARTS MADE OF SUCH MATERIALS WHILE STILL MAINTAINING THEIR EFFECTIVENESS IS A MAJOR CONCERN. FABRICA ...

N/A

N/A