Award Data

IMPROVED PERFORMANCE OF TONPILZ-TYPE TRANSDUCER ELEMENTS CAN RESULT FROM (1) INCREASING THE AREA OF THE RADIATING FACE AND (2) DECREASING THE MASS OF THE RADIATING HEAD. HOWEVER, SUCH IMPROVEMENT IS LIMITED BY THE INTRODUCTION OF A FLEXURE MODE, WITH THE OUTER RING MOVING AT A DIFFERENT VELOCITY AND PHASE FROM THE INNER AREA OF THE HEAD-MASS. THE UNDESIRABLE RESULT IS A BI-MODAL RESPONSE WITH, GEN ...

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METHYLENE BIS O-CHLORO ANILINE HAS LONG BEEN RECOGNIZED AS A SUPERIOR URETHANE CURATIVE BUT TOXICITY CONCERNS HAVE LIMITED ITS USE. ALTERNATIVE COMPOUNDS ARE AVAILABLE, BUT THEY CANNOT MATCH THE HANDLING AND ULTIMATE PHYSICAL PROPERTIES OF MOCA CURED ELASTOMERS. AN INVESTIGATIONS OF NOVEL PLYAMINE AND POLYOL COMPOUNDS SHOULD YIELD NEW AND USEFUL URETHANE CURATIVES. THE PROGRAM WOULD IN VOLVE SCREE ...

FLAME RETARDANT FLEXIBLE POLYURETHANE FOAM FINDS WIDESPREAD COMMERCIAL USE AS A SEATING MATERIAL DUE TO ITS FAVORABLE COST, SUPPORT, AND RESILIENCE CHARACTERISTICS. HOWEVER, SMOKE AND TOXIC GAS EVOLUTION IN THE EVENT OF FIRE IS A MAJOR PROBLEM. THE GOAL OF THIS PROGRAM IS TO CREATE A FIRE RESISTANT COMPOSITE FOAM STRUCTURE WHICH WILL GENERATE NEGLIGIBLE QUANTITIES OF TOXIC FUMES WHEN EXPOSED TO FI ...

THIS PROPOSED STUDY WILL EXAMINE THE FEASIBILITY OF USING A EULERIAN LIMITED AREA MODEL (LAM) TO IMPROVE PREDICTION OF CHEMICAL, BIOLOGICAL, AND OBSCURANT CLOUDS DURING AMPHIBIOUS OPERATIONS. THE LAM HAS BEEN USED TO PREDICT MESOSCALE AND MICROSCALE METEORO LOGICAL PHENOMENA FOR A WIDE VARIETY OF CLIMATIC REGIMES AND HAS BEEN TESTED FOR A NUMBER OF EXTENSIVE METEOROLOGICAL FIELD EXPERIMENTS. THE L ...

LOW-COST CIG SIMULATORS FOR WEAPONS TRAINING COULD BE PRODUCED THROUGH THE USE OF VLSI CHIPS SPECIFICALLY DESIGNED TO CARRY OUT THE MAJOR FUNCTIONS OF IMAGE GENERATION, NAMELY 3-D PERSPECTIVE, DIFFUSE REFLECTION AND SHADING, HIDDEN SURFACE REMOVAL AND OCCULTATION IN GENERAL, CLIPPING AND AREA FILL. THESE CHIPS WILL BE FAST ENOUGH TO ALLOW COMPUTATION AT 60 FRAMES/SEC WITH A RESOLUTION OF 1024 X 10 ...

Sonalysts proposes to investigate the field of research associated with uncertainty visualization and utilize this information in conjunction with human systems integration (HSI) design principles and subject matter expertise (SME) to design innovative uncertainty visualization approaches and methods for validating overall approach effectiveness. One of the biggest challenges for today’s war-fig ...

Anti-reflection coating of ogive shaped optics presents a number of technical challenges. The principle challenge is obtaining a uniform high transmission coating on a strongly curved surface. The coating must perform well over a wide range of angles. If the optic is exposed to ambient conditions, it must be resistant to rain and dust impact, as well as rapid changes in temperature. The proposed p ...

An automatic software tool for 3D fatigue crack growth prognosis of structural systems under realistic complex loading will be developed by integrating a unified growth model with a mesh independent extended finite element toolkit in ABAQUS. The tool will be able to model arbitrary non-planer crack growth over multiple growth regimes with an arbitrary stress ratio without user intervention or reme ...

The concept, design, and instantiation of a Next Generation Navy Cash system represents a clear opportunity for the DoD and Navy to leverage and intelligently apply advances in cardless technologies, future Navy shipboard Open Architecture (OA) processing and network infrastructures, and the account-based cashless financial transaction model. Objective research, investigation, and review of these ...