Award Data

THIS PROGRAM WILL DEVELOP A NEW COMPUTER CONTROLLED STEREOLITHOGRAPHY PROCESS FOR THE MANUFACTURE OF REINFORCED CERAMIC COMPOSITE PARTS. PHASE I WILL DEMONSTRATE A WORKING SYSTEM THAT WILL DIRECTLY READ A COMPUTER CAD DRAWING OF A SIMPLE COMPONENT AND THEN GENERATE THE ACTUAL GREEN COMPOSITE PART. PHASE I WORK WILL INCLUDE DEVELOPMENT AND FABRICATION OF SYSTEM HARDWARE AND SOFTWARE, DEVELOPMENT OF ...

AstroPower is developing a two-junction monolithic tandem solar cell composed of (AlxGa1-x)0.51In.49P lattice matched to GaAs for use as the top cell in a three-junction, two-terminal tandem stack. This tunable bandgap material system is capable of current matching, at 2.03eV, in a two-junction monolithic tandem solar cell two terminal design of (AlxGa1-x)0.51In0.49P/GaAs yielding a best case pred ...

ASTROPOWER IS PROPOSING THE DEVELOPMENT OF AN ULTRA-LIGHTWEIGHT, HIGH PERFORMANCE, THIN LIGHT TRAPPING GAAS SOLAR CELL FOR ADVANCED SPACE POWER SYSTEMS. A THIN DEVICE LEADS TO HIGHER PERFORMANCE IN TERMS OF OPEN CIRCUIT VOLTAGE, RADIATION RESISTANCE, AND SPECIFIC POWER. IN A THIN DEVICE, THE INCORPORATION OF LIGHT TRAPPING TO EXTEND THE OPTICAL PATH LENGTH PERMITS GREATER CURRENT GENERATIC THAN CA ...

ASTROPOWER PROPOSES TO DEVELOP A LIGHTWEIGHT, HIGH PERFORMANCE, ULTRA-THIN ELECTROSTATICALLY BONDED GaAs SOLAR CELL WITH COPLANAR BACK CONTACTS. THE INNOVATIVE DESIGN INCORPORATES LIGHT TRAPPING, ADHESIVELESS COVER SLIDE BONDING, AND ELIMINATES GRID SHADING. THIS NOVEL DEVICE WILL EXHIBIT INCREASED EFFICIENCY AND SPECIFIC POWER DUE TO THE HIGHER OPEN CIRCUIT VOLTAGE AND SHORT CIRCUIT CURRENT OBTAI ...

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Proposed is a new concept for high effectiveness regenerative heat exchangers which are critically needed to develop efficient cryocoolers for operation at temperatures of 10K and below. Development of light weight, power efficient, long life cryocoolers capable of providing refrigeration at and below 10K has become a critically-pacing technology for spaceborne instrumentation. The best current 10 ...

Research and Development is proposed of a novel form of compact freon-free refrigeration system. The proposed unit operates on the Stirling cycle using air as the working fluid. The refrigeratro has an innovative arrangement of four double-acting pistons which will permit a compact, rugged system of high thermodynamic efficiency fabricated from commonly available materials. Another innovative feat ...

Disposal of explosives waste residues is an ongoing problem for federal and private manufacturers of ordnance containing these chemicals. The need for new disposal technology has been heightened by discovery of ordnance compounds in soils and groundwaters at military sites across the United States. To prevent further contamination from improperly stored munitions wastes and industrial waste stream ...