Award Data

INNOVATIVE TECHNIQUES ARE PROPOSED FOR INVESTIGATION IN A PHASE I EFFORT TO DETERMINE PASSIVE RF SURVEILLANCE AND TARGETING SENSORS AND ASSOCAITED METHODOLOGY FOR PERFORMING RAPID AND ACCURAGE MEASUREMENTS OF RANGE/LOCATION OF THREAT RF EMITTERS. THE ESSENTIAL PHYSICAL CONSTRAINTS TO BE OBSERVED ARE SENSOR COMPATIBILITY WITH, AND PORTABILITY OF THE ASSOCIATED RANGE DETERMINATION/PROCESSING EQUIPME ...

DUCTILE CHIP FORMATION, UNLIKE THE BRITTLE CHIP FORMATION TYPICALLY OBSERVED IN DIAMOND GRINDING OF CERAMICS, DOES NOTLEAVE BEHIND SURFACE OR SUBSURFACE MICROCRACKS. ACCORDINGLY, MACHINE PROCESSES INVOLVING POLISHING CAN BE ELIMINATED FROM FABRICATION IF MATERIAL REMOVAL DURING GRINDING OCCURS THROUGH DUCTILE CHIP FORMATION. DUCTILE CHIP FORMATION IS ESSENTIALLY AN EXTRUSION PROCESS IN WHICH AN IN ...

INCREASES IN INFORMATION BANDWIDTH USING COMMUNICATION CHANNELS OF FIXED PHYSICAL BANDWIDTH ARE MADE POSSIBLE BY ELIMINATING REDUNDANT INFORMATION IN THE INFORMATION STREAM USING DATA COMPRESSION-DECOMPRESSION ALGORITHMS. IMAGES--ESPECIALLY MULTISPECTRAL OR COLOR IMAGES--PUT THE GREATEST STRAIN ON COMMUNICATIONS CHANNELS. A VARIETY OF EXISTING TECHNIQUES, OF VARYING MATURITY, MAY BE APPLIED TO THE ...

HALON 1301 (CF3BR) IS CURRENTLY IN WIDE SPREAD USE ON NAVAL VESSELSAS AN EFFECTIVE AND NON-TOXIC ACTIVE AGENT IN FIRE SUPPRESSION SYSTEMS. UNFORTUNATELY, FUTURE MANUFACTURE AND USE OF CF3BR MAY BE SEVERELY RESTRICTED DUE TO ITS ROLE AS A POTENT AGENT IN STRATOSPHERIC OZONE DEPLETION CHEMISTRY. ALTERNATIVE FIRE SUPPRESSION CHEMICALS NEED TOBE IDENTIFIED AND ASSESSED TO REPLACE HALON 1301 IN NAVAL S ...

ONE OF THE MOST IMPORTANT CONTRIBUTIONS TO THE RADIATION EXPOSURE OF PERSONNEL ENGAGED IN SPACE FLIGHT IS THE SIGNIFICANT FLUX OF HIGH ENERGY NEUTRONS ARISING FROM BOTH PRIMARY AND SECONDARY SOURCES OF IONIZING RADIATION. PRESENTLY, THERE DOES NOT EXIST A SUITABLE AND COMPACT NEUTRON SENSOR CAPABLE OF BEING INCORPORATED IN A FLIGHT INSTRUMENT TO PROVIDE HIGH QUALITY, REAL TIME MEASUREMENT OF THIS ...

THE DISCOVERY OF SUPERCONDUCTIVITY AT HIGH TEMPERATURES (90 K) IN COPPER CONTAINING CERAMICS HAS RESULTED IN THE RAPID ACCELERATION OF SUPERCONDUCTOR RESEARCH. MUCH OF THISRESEARCH IS BEING DIRECTED AT PRODUCING AND EXAMINING NEW COMPOUNDS BOTH TO IMPROVE PERFORMANCE CHARACTERISTICS AND TOBETTER UNDERSTAND THE PHENOMENON. REALIZING THE POTENTIAL COMMERCIAL BENEFITS OF THIS NEW DISCOVERY DEPENDS AS ...

esign of the IR/RF payloads.

A NEW APPROACH TO CLOSED-CYCLE, CRYOGENIC COOLING WILL BE DEVELOPED USING A POLYMER-MEMBRANE-BASED, ELECTROCHEMICALLY DRIVEN CRYOSTAT THAT EMPLOYS OXYGEN AS THE TWO-PHASE WORKING FLUID IN A MODIFIED LINDE-HAMPSON, DOUBLE-EXPANSION CYCLE. THE CYCLE PERMITS THE USE OF ADVANCED MEMBRANES IN AN ELECTROCHEMICAL COMPRESSOR. IMPROVEMENTS IN SIZE AND COST BY A FACTOR LEAST TWO, WITH NO INCREASE IN COEFFIC ...

WE PROPOSE TO DEVELOP AN ANTI-REFLECTION (AR) COATING FOR DIAMOND FILMS OPTIMIZED TO ENHANCE THE TRANSMISSION IN THE 8 TO 12 MICRON REGION OF THE SPECTRUM. THE METAL-OXIDE MATERIALS TO BE EVALUATED HAVE GOOD OPTICAL TRANSMISSION IN THIS SPECTRAL REGION AND REFRACTIVE INDICES NEAR THE OPTIMUM VALUE OF 1.55 FOR A DIAMOND AR COATING. SINCE A SECONDARY PURPOSE OF THE COATING IS TO PROTECT THE DIAMOND ...

DUE TO THE FORTHCOMING BAN ON ALL OZONE DEPLETING REFRIGERANTS, THENAVY NEEDS NEW REFRIGERATION TECHNOLOGIES TO REPLACE THOSE USING SUCH CHEMICALS. THE PROPOSED SYSTEM USES SOME OF THE INHERENT DESIGN ADVANTAGES OF A SCREW COMPRESSOR TO ADAPT IT TO A VAPOR COMPRESSION REFRIGERATION SYSTEM USING REFRIGERANT HFC-134A. HFC-134A HAS NO OZONE DEPLETION POTENTIAL. THE USE OF SCREW COMPRESSORS CAN OVERCO ...