Award Data

"Nondestructive inspection is a key component of programs aimed at extending the service life of aging aircraft. One important capability is the detection of cracking and corrosion around fastener holes. In thick, multiple layer structures, there is oftenno solution but removal of the fasteners for inspection, a costly and potentially damaging process. Phased array ultrasonics offer a novel and ...

"Current manufacturing technology for cast titanium components cannot guarantee theabsence of hard alpha inclusions.Under the effect of fatigue, such inclusions become likely sites for structuralfailure. By performing nondestructive inspections on the manufactured parts usingphased array ultrasound, one can eliminate parts with the largest inclusions.Despite such quality control, undetected inclus ...

THE OBJECTIVES OF PHASE I ARE TO DETERMINE HOW WELL THE SMALL SCALE TESTS CURRENTLY USED FOR SCREENING EXPLOSIVES, AND THE MODELS THAT DESCRIBE EXPLOSIVE BEHAVIOR IN THE SMALL SCALE TEST AND IN THE FULL SCALE MUNITION, CAN PREDICT THRESHOLDS OF EXPLOSIVE REACTION IN THE OPERATIONAL FULL SCALE MUNITION. FULL SCALE MUNITIONS WILL BE STUDIED TO DETERMINE THE CRITICAL MODE(S) OF EXPLOSIVE REACTION THA ...

THE PROBLEM IS TO DEVELOP SHALLOW DEPTH ROTATING BANDS FOR HIGH VELOCITY PROJECTILES THAT WILL MINIMIZE BARREL EROSION AND REDUCE DRAG TO AN ABSOLUTE MINIMUM, USING INEXPENSIVE METHODS OF RETAINING INJECTION-MOLDABLE THERMOPLASTIC MATERIALS. THE PROPOSED APPROACH IS TO TRADE OFF STRONGLY-RETAINED LOW DRAG ROTATING BANDS AGAINST BARREL EXIT-SEPARATING BANDS THAT ARE ASSISTED IN RETENTION INSIDE THE ...

THE PROPOSED WORK PROVIDES AN INTEGRATION OF THE ELECTRONIC DELIVERY TECHNOLOGY DEVELOPED THROUGH THE U.S. ARMY RESEARCHINSTITUTE FOR THE ARMY'S BASIC SKILLS EDUCATIONAL PROGRAM, AND THE NEEDS OF THE CIVILIAN POPULATION IN ADULT LITERACY/ BASIC SKILLS EDUCATION. TESTED CONCEPTS USED IN THE HAND- HELD TUTOR THAT HAVE PROVEN EFFECTIVE IN THE TEACHING OF SPECIALIZED VOCABULARY TO SOLDIERS IN THE ARMY ...

ALUMINUM COATED GLASS FIBERS HAVE FOUND BROAD BASED USE AS RADAR CHAFF, HOWEVER, EXISTING METHODS OF MANUFACTURE ARE GENERALLY HIGH COST AND DO NOT OPTIMIZE ADHESION BETWEEN METAL AND GLASS WHICH MAY LEAD TO PERFORMANCE LOSS DURING HANDLING OR PROCESSING. BY UTILIZING A HIGH SPEED, LOW CAPITAL COST PROCESS SUCH AS CHEMICAL VAPOR DEPOSITION (CVD) IN COMBINATION WITH NOVEL INTERLAYER TECHNOLOGY, A P ...

THE OBJECTIVE OF THIS EFFORT IS TO PROVIDE A REVIEW AND ANALYSIS OF EXISTING AIRCRAFT MAINTENANCE SHELTER STRUCTURES AND MATERIALS AND MOBILE HEATING/COOLING SYSTEMS. ONE ATTRACTIVE APPROACH IS TO REFINE PRIOR WORK ON THE LOCARCH SHELTER PROGRAM IN A TEAMING EFFORT WITH LOCKHEED GEORGIA COMPANY, THE ORIGINAL DEVELOPER. SHOULD NO EXISTING SHELTER HARDWARE PROVIDE SATISFACTORY PERFORMANCE, THE EFFOR ...

THE EFFICIENT DEVELOPMENT OF ADVANCED AIRCRAFT CONCEPTS OR INTRODUCTION OF NEW FUELS WILL REQUIRE INCREASED MECHANISTIC UNDERSTANDING AND MODELS TO PREDICT THERMAL STABILITY IN ORDER TO ELIMINATE THE REQUIREMENT FOR EXTENSIVE EMPIRICAL TESTING. THE PROPOSAL IS FOR A COMBINED EXPERIMENTAL, ANALYTICAL, AND MODELING PROGRAM TO DEVELOP A MECHANISTIC UNDERSTANDING AND MODEL OF FUEL THERMAL STABILITY. T ...

THE RECENT DISCOVERY OF PEROVSKITE-LIKE COPPER-OXIDE SUPERCONDUCTORS WITH TRANSITION TEMPERATURES ABOVE LIQUID NITROGEN TEMPERATURES HAS LED TO RENEWED INTEREST IN THE APPLICATION OF SUPERCONDUCTIVITY. THESE NEW YBACUO (YBA[2]CU[3[O[7-X]) MATERIALS OFFER THE OPPORTUNITY TO USE THESE MATERIALS AS DETECTORS MORE CONVENIENTLY THAN THE "CLASSICAL" SUPERCONDUCTORS. THE LARGER ENERGY GAP OF THESE NEW HI ...

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