Award Data

Microwave Technologies Incorporated is proposing the development of a very compact radio-frequency (rf) electron beam accelerator which appears to be well-suited for BMDO's directed energy applications. This novel concept employs a single short rf cavity operating in circular polarization to accelerate a low-energy ma ~netized pencil beam to energies that range from 2 to 10 MeV. The proposed accel ...

NON-NUCLEAR APPROACHES ARE SOUGHT FOR HIGH ENERGY DENSITIES FOR SPACE POWER SYSTEMS. ONE CRITICAL COMPONENT TO ACHIEVE IMPROVED PERFORMANCE IS CAPACITOR STORES. THESE ARE DEPENDENT UPON ADVANCES IN LOW LOSS, HIGH ENERGY/HIGH POWER DENSITY STORAGE MATERIALS. A UNIQUE INORGANIC COMPOSITE IS PROPOSED FOR INVESTIGATION AS A HIGH ENERGY DENSITY STORAGE MATERIAL. AN APPROACH IS FORMULATED BASED ON SOL-G ...

Glass is an attractive material for microelectronic packaging because it is hermetically sealing, has a low coefficient of thermal expansion, and is compatible with d.c. circuits. Unfortunately, the working temperature of glass is too high for this application. Low-temperature processing of a sol-gel derived, aluminosilicate material for hermetic seals is proposed for electronic packaging. This ...

The quality and durability of coatings produced by virtually all thermal spray techniques could be improved by, among other things, increasing the velocity with which coatings particles impact the coated surface and by better control of the chemical and thermal environment seen by the particles during flight. A new and innovative approach to thermal spraying is proposed that can increase coating p ...

A SELF-REGENERATIVE FEEDBACK TECHNIQUE IS BEING INVESTIGATEDTO SUPPRESS THE FORMATION OF SIDEBANDS THAT LIMIT THE SPECTRAL BRIGHTNESS AND GENERAL PERFORMANCE OF PRESENT HIGH-POWER FREE ELECTRON LASERS (FELS). THIS TECHNIQUE DOES NOT INVOLVE INTRA-CAVITY COMPONENTS THAT SUFFER LOSS DAMAGE DUE TO HIGH POWER OPERATION. A POTENTIAL BREAKTHROUGH IN FEL TECHNOLOGY, ANALYSIS AND SIMULATION ARE BEING PERF ...

CURRENT STUDIES CONCENTRATE ON GLOBAL POSITIONING SYSTEM (GPS) AS A SPACECRAFT ATTITUDE DETERMINATION TOOL. TWO GPS ANTENNAS RECEIVING THE SAME SIGNAL CAN COMPARE THEIR RELATIVE PHASES TO DETERMINE THE ANGLE BETWEEN THE TWO ANTENNAS AND THE GPS SATELLITE. BY COMPUTING THE ANGLE TO THREE OR MORE SATELLITES, THE COMPLETE INERTIAL ORIENTATION MAY BE DETERMINED. APPLYING ADVANCES IN GPS INTERFEROMETRY ...

The proposed effort will apply advanced methods of hybrid learning to problems of detection and identification of sensory events (e.g., boost phase evens). Our approach aims at building a vision system capable of hybrid learning, in which symbolic (rule-based) and subsymbolic (neural network) strategies are integrated to achieve high efficiency and accuracy both in learning human comprehensible se ...

COATINGS ARE NEEDED TO PROTECT FROM DAMAGE AND DETERIORATION THE LARGEVARIETY OF OPTICAL COMPONENTS WHICH WILL BE USED IN SPACE-BASED DEFENSE SYSTEMS. THESE COATINGS MUST BE TRANSPARENT FROM THE INFRAREDTO THE ULTRAVIOLET, HARD, RESISTANT TO EROSION BY ATOMIC OXYGEN AND BYPARTICLES, AND SURVIVABLE UNDER EXTREME TEMPERATURE CYCLING. THE TECHNOLOGY OF PLASMA-AIDED COATING IS BEING DEVELOPED TO APPLY ...

THE APPLICATION OF HIGH TEMPERATURE SUPERCONDUCTORS IS SEVERELY LIMITED BY THE LOW CURRENT DENSITIES ACHIEVABLE IN BULK MATERIALS, SUCH AS Y1BA2CU3O(7-X), OR 123 FOR SHORT. THE LARGE CURRENT DENSITIES OBSERVED WITHIN INDIVIDUAL GRAINS (AND IN THIN FILMS) ARE REDUCED BY "WEAK LINKS" AT THE GRAIN BOUNDARIES, CAUSED BY MISALIGNMENT OF THE ANISOTROPIC GRAINS AND BY INSULATING IMPURITY PHASES. SOME OF ...

THE DEVELOPMENT OF HIGH POWER, HIGH REPETITION RATE CLOSING SWITCHES HAS RECENTLY BECOME IMPORTANT FOR MANY PULSED POWER APPLICATIONS. HISTORICALLY, HIGH REPETITION RATE SWITCHES FOR PULSED POWER APPLICATIONS HAVE EITHER BEEN SPARK GAPS OR THYRATRONS. THYRATRONS HAVE HIGH REPETITION RATES, BUT ARE LIMITED TO LOW VOLTAGES AND LOW CURRENT. CONVERSELY, SPARK GAPS CAN CARRY HIGH CURRENTS AND STAND-OFF ...