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THE DEVELOPMENT OF A MANUFACTURING TECHNOLOGY THAT ALLOWS THE OPTIMIZATION OF THE MECHANICAL AND SUPERCONDUCTING PROPERTIES OF BULK CONDUCTORS IS CRUCIAL FOR THEIR IMPLEMENTATION IN AEROSPACE POWER TRANSMISSION AND PROPULSION APPLICATIONS. STATE-OF-THE-ART PROCESSING OF BULK HIGH TEMPERATURE SUPERCONDUCTING COMPONENTS GIVES MATERIAL WITH LOW CURRENT CARRY CAPACITIES AND MECHANICAL PROPERTIES CONST ...

THE DISCOVERY OF THE NEW HIGH TEMPERATURE SUPERCONDUCTING (HTSC) OXIDES COUPLED WITH THE ADVENT OF DIAMOND THIN FILM GROWTH BY CHEMICAL VAPOR DEPOSITION TECHNIQUES HAVE OPENED UP THE POSSIBILITY OF A HIGH TEMPERATURE SUPERCONDUCTING TRANSITION EDGE BOLOMETER FOR USE AT SUBMILLIMETER WAVE LENGTHS. PRESENT DETECTOR TECHNOLOGY FOR THE SUBMILLIMETER WAVE REGION CONSISTS OF LOW SENSITIVITY, ROOM TEMPER ...

MERCURY CADMIUM TELLURIDE (MCT) ALLOYS ARE OF MAJOR IMPORTANCE FOR NONCRYOGENICALLY COOLED 1.0 TO 16.0 MU M (IR)DETECTOR ARRAYS. WIDESPREAD DEPLOYMENT OF MCT ARRAYS BASED ON HIGH SENSITIVITY PHOTODIODES HAS BEEN SLOWED BY THE DEARTH OF REPEATABLE GROWTH PROCESSES CAPABLE OF PRODUCING HIGH QUALITY FILMS AND DEVICES WITH ABRUPT OR CONTROLLED JUNCTIONS. A NEW UNASSISTED PYROLYTIC METAL ORGANIC CHEMIC ...

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BECAUSE OF THE COMPLEXITY OF THE HELICOPTER FLOW FIELD, A ZONAL METHOD OF ANALYSIS OF COMPUTATIONAL AERODYNAMICS IS REQUIRED. IN THIS RESEARCH, A NEW PROCEDURE FOR COUPLING POTENTIAL AND VISCOUS FLOW CALCULATION SCHEMES IS PROPOSED. AN OVER-LAPPING, VELOCITY-COUPLING TECHNIQUE IS TO BE DEVELOPED WITH THE UNIQUE FEATURE THAT THE POTENTIAL FLOW SURFACE SINGULARITY STRENGTHS ARE OBTAINED DIRECTLY FRO ...

A GRID ADAPTION PROCEDURE IS PROPOSED FOR A RECENTLY DEVELOPED CLASS OF NAVIER-STOKES SOLVERS WHICH USE RELAXATION RATHER THAN APPROXIMATE FACTORIZATION TO SOLVE THE LINEAR SYSTEM OF EQUATIONS. THE OBJECTIVE OF THE PROPOSED WORK IS THE IMPLICIT COUPLING OF AN EXISTING TWO-DIMENSIONAL NAVIER-STOKES CODE AND AN EXISTING TWO-DIMENSIONAL GRID ADAPTION CODE. THE GRID ADAPTION USES A SPRING/DAMPER ANALO ...

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STIRLING TECHNOLOGY COMPANY (STC) WILL DEVELOP AND TEST THE TECHNOLOGY DEMONSTRATION MODEL (TDM) MODEL OF A LONG LIFE VIRTUALLY VIBRATIONLESS CRYOFLEX STIRLING CRYOCOOLER FOR COOLING SENSORS TO THE 65 TO 80 K TEMPERATURERANGE. FLEXURAL BEARING AND GAS CLEARANCE SEAL TECHNOLOGIESPROVIDE THE POTENTIAL FOR 10- TO 15-YEAR LIFE. STC HAS LONGSTANDING EXPERIENCE AND CURRENT RESEARCH INTERESTS AND ACTIVIT ...

STIRLING TECHNOLOGY COMPANY (STC) WILL DEVELOP AND TEST THE TECHNOLOGY DEMONSTRATION MODEL (TDM) MODEL OF A HIGH EFFICIENCY, LONG LIFE, LOW VIBRATION CRYOFLEX DOUBLE-EXPANSION CRYOGENIC PRE-COOLER TO BE USED AS A STANDARD FLIGHT PRE-COOLER FOR REJECT HEAT REMOVAL FROM ALTERNATIVE VERY LOW TEMPERATURE CRYOCOOLER STAGES. THE KEY OBJECTIVES FOR THE CRYOGENIC PRE-COOLER ARE HIGH EFFICIENCY, LOW VIBRAT ...

MANY WIDEBAND COMMUNICATIONS, RADAR AND EW RECEIVERS COULD BENEFIT FROM A SIMPLE MEANS OF NARROW BAND (IE AN ORDER OF MAGNITUDE LESS THAN THE DESIRED SIGNAL'S SPECTRAL BANDWIDTH) INTERFERENCE SUPPRESSION. SURFACE ACOUSTIC WAVES (SAW) OFFER SUCH A CAPABILITY BECAUSE THEY CAN: 1. SORT FREQUENCIES INTO MULTIPLE SPATIAL CHANNELS, AND 2. INDEPENDENTLY SATURATE ANY CHANNEL IN THE PRESENCE OF A LARGE SIG ...