Award Data

GAASP SOLAR CELLS PLACED ON TOP OF CONVENTIONAL SILICON SOLAR CELL ARRAYS CAN INCREASE THE ENERGY CONVERSION EFFICIENCY OF THE SYSTEM AS MUCH AS 100%. ASTROPOWER DIVISION OF ASTROSYSTEMS, INC. PROPOSES TO DEVELOP A HIGH BAND GAP TOP SOLAR CELL FOR ATTACHMENT TO CONVENTIONALS ILICON SOLAR CELLS. TRANSPARENT GAP SUBSTRATES WILL BE USED WITH EPITAXIALLY GROWN LAYERS OF GAASPH HAVING A BAND GAP OF 1.7 ...

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 ...

TRADITIONALLY, THE DETONATION HAS BEEN TREATED BY THE SHOCK THEORY, AND EXPLOSIVES AND PROPELLANTS HAVE BEEN CONSIDERED AS ENERGETIC FLUIDS. MANY SOLID PROPERTIES HAVE NOT BEEN MEASURED AND ARE NOT AVAILABLE FROM THE HANDBOOKS. RECENT RESULTS IN MUNITION SENSITIVITY STUDIES SHOW THAT SHEARING IS ONE OF THE MAIN MECHANISMS IN CAUSING DETONATION, AND IS CONTROLLED BY CERTAIN SOLID PROPERTIES. IN THE ...

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THIS PROPOSAL DESCRIBES THE EFFORTS REQUIRED TO STUDY THE EFFECTS OF VARIOUS MATERIALS ON THE REDUCTION OF ELECTRONIC INTERFACE IN THE PLASMA OF A RE-ENTRY VEHICLE HEAT SHIELD. A FUNDEMENTAL UNDERSTANDING OF THE MECHANISM BY MEANS OF WHICH THESE MATERIALS ACHIEVE A REDUCTION IN ELECTRONIC INTERFERENCE IS THE GOAL OF THE PROPOSED INVESTIGATIONS, IN WHICH THE GSI FLAME TEST APPARATUS IS USED TO DETE ...

SOLID LUBRICATION OFFERS SIGNIFICANT ADVANTAGES FOR ROLLING ELEMENT BEARINGS AND MACHINERY EXPOSED TO EXTREME CONDITIONS. A MAJOR CONSTRAINT IS THAT CURRENT DESIGNS FOR SUCH BEARINGS ARE BASED ON HYDRODYNAMIC LUBRICATION (OIL AND GREASE). THE CHALLENGE IS TO IDENTIFY A NEW CONCEPT THAT FOCUSES THE REQUIREMENTS FOR THE EFFECTVE USE OF SOLIDS AND A METHODOLOGY FOR SOLID LUBRICANT-BEARING SYSTEM INTE ...

CDTE ELECTROOPTC MODULATOR CYSTALS UP TO10X10X50MM3 WILL BE THE DEVICE OF CHOICE IN MANY CO2 LASER RADAR SYSTEMS UNDER DEVELOPMENT BY AFAL. THE OBJECTIVES OF THIS WORK IS TO SIGNIFICANTLY RAISE CURRENTLY LOW YIELDS IN THE MANUFACTURE OF LARGE ELECTROOOPTIC GRADE CDTE SINGLE CRYSTALS THEREBY IMPROVING THE PRODUCIBLITY OF CDTE MODULATORS. PHASE I WILL INCLUDE: 1. A LITERATURE SEARCH OF OPTIMUMCONDIT ...

A SIX MONTH PROGRAM TO DEVELOP A RUGGED NEW DEVICE FOR MONITORING THE ONSET OF ICE FORMATION ON SURFACES OF TRANSPORTATION VEHICLES, ROADS, BRIDGES AND AIRCRAFTS, WILL BE DEVELOPED AND A PROTOTYPE WILL BE LABORATORY TESTED. THE NOVEL GAGE AND ELECTRONIC SYSTEM IS PARTLY BASED ON THE TECHNOLOGY APPLIED TO MEASURE CONDUCTIVITY OF SOLUTIONS. BASED ON EXISTING TECHNOLOGY, AND ALREADY TESTED UNDER HIGH ...

THIS PROPOSAL OUTLINES RESEARCH INTO THE FEASIBILITY OF THE PRODUCTION OF PERFLUOROPOLYALKYLETHER FLUIDS, WITH A VARIETY OF MOLECULAR STRUCTURES, USING THE TECHNIQUE OF DYNAMIC FLOW DIRECT FLUORINATION IN THE LIQUID PHASE. THIS WOULD INVOLVE THE SURFACE FLUORINATION OF RAPIDLY STIRRED (CA. 3500 R.P.M.), NEAT ETHER, AND POLYETHER LIQUIDS OVER A RANGE OF TEMPERATURES (-78 TO 100 C). THIS REPRESENTS ...

A TECHNICAL RESEARCH PROGRAM AIMED AT DEVELOPING AN ANALYTICAL PROCEDURE FOR INVESTIGATING THE DAMAGE PRODUCED IN COMPOSITE PLATES, DUE TO LOW VELOCITY IMPACT, IS PROPOSED. THE METHOD OUTLINED IN THIS PROPOSAL UTILIZES A HIGHER ORDER, SHEAR FLEXIBLE, PLATE BENDING FINITE ELEMENT. THIS ELEMENT INCORPORATES SHEAR DEFORMATION EFFECTS AND INCLUDES COUPLING BETWEEN MEMBRANE AND BENDING DEGREES OF FREED ...