Award Data

COMMERCIAL AND GOVERNMENT SPACE TRANSPORTATION SYSTEMS DEPEND ON GROUND SUPPORT FOR NAVIGATION. THE GROUND SOLUTION CAN BE COSTLY AND MAY PROVIDE LESS ACCURACY THAN NEEDED. A GPS-BASED REAL-TIME AUTONOMOUS SPACECRAFT NAVIGATION SYSTEM IS PROPOSED. AN ALGORITHM WILL BE DEVELOPED WHICH COMBINES GPS-DERIVED POINT POSITION ESTIMATES WITH A PROPAGATED A PRIORI POSITION ESTIMATE. THE POINT POSITIONS ARE ...

A GENERAL-PURPOSE, SOLUTION-ADAPTIVE, FINITE-ELEMENTS CODE THAT TREATS BROAD CLASSES OF INCOMPRESSIBLE FLOWS HAS BEEN DEVELOPED. THE CODE EMPLOYS H-ADAPTIVE AND P-ENRICHMENT ALGORITHMS THAT REFINE THE STRUCTURE OF THE MESH TO OPTIMIZE COMPUTATIONS. THE FULL POTENTIAL FOR USE OF SUCH SMART ALGORITHMS IN COMPUTATIONAL FLUID DYNAMICS APPEARS TO LIE IN PARALLEL COMPUTATIONS PRIMARILY BECAUSE OF THE EX ...

DURING PHASE I, WE WILL DEVELOP AN ALGORITHM TO CALCULATE THE FORCES GENERATED DUE TO THE IMPACT OF AIRCRAFT STRUCTURES WITH SOIL. THIS ALGORITHM WILL BE INTEGRATED WITH THE CURRENT KRASH PROGRAM AS AN EXTERNAL FORCE ACTING ON THE VARIOUS MASS ELEMENTS THAT ARE DEFINED IN KRASH. THE FAILURE OF SOIL DUE TO THE IMPACT OF THE AIRCRAFT AND DRAGGING OF THE AIRCRAFT ALONG THE SURFACE WILL BE MODELLED TA ...

A NEED EXISTS TO MONITOR VIBRATION IN HIGHWAY BRIDGES. IT IS DESIRABLE TO MONITOR MANY POINTS ON THE BRIDGE. THE CURRENT PROBLEM IS THAT SENSORS MUST BE WIRED TO A CENTRAL LOCATION. WIRE IS DIFFICULT TO INSTALL AND TO MOVE. THE SOLUTION IS TO COLLECT SENSOR DATA BY RADIO. A SYSTEM EXISTS THAT ELIMINATES WIRE. IT GATHERS SENSOR DATA TO A CENTRAL LOCATION BY RADIO. THE SYSTEM'S UNIQUE FEATURE IS THA ...

THE HIGH PRESSURE LIMITS OF A NEW PROPRIETARY TECHNIQUE FOR SURFACE ELEMENTAL AND ISOTOPIC ANALYSIS ARE BEING EXPLORED. THE TECHNIQUE SHOULD BE USEFUL IN THE MILLITORR PRESSURE REGIME, THUS ALLOWING MEASUREMENT OF THIN FILM STOICHIOMETRY DURING GROWTH AND PROCESSING. THE PRESENT RESEARCH IS FOCUSING ON ANALYSIS OF YTTRIUM-BARIUM-COPPER-OXYGEN (YBCO) SUPERCONDUCTOR FILMS SUBJECTED TO HIGH PRESSURES ...

A METHOD TO MEASURE NONDESTRUCTIVELY THE BIAXIAL RESIDUAL STRESSES IN FERRITIC PIPING WELDS WITHIN FOSSIL-FIRED AND NUCLEAR-POWERED ELECTRICITY GENERATING PLANTS IS PLANNED. THE METHOD USES THE MAGNETICALLY INDUCED VELOCITY CHANGES OF ULTRASONIC WAVES TO DETERMINE THE STRESSES. IT IS BEING SHOWN THAT THE METHOD CAN DETERMINE THE ABSOLUTE VALUES, SIGN, AND ORIENTATION OF THE AXIAL AND CIRCUMFERENTI ...

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A MAJOR LIMITATION IN CURRENT LARGE SCALE GENOME MAPPING METHODOLOGY IS THAT FEW TOOLS EXIST FOR GENERATING SPECIFIC DNA FRAGMENTS IN THE MEGABASE SIZE RANGE. THIS PHASE I RESEARCH IS EXAMINING THE FEASIBILITY OF DEVELOPING A FAMILYOF INTRON-ENCODED SITE-SPECIFIC ENDONUCLEASES CAPABLE OF GENERATING DNA FRAGMENTS 2 TO 100 MEGABASES IN SIZE BY USINGTHE FOLLOWING STEPS: (1) DEVELOP METHODS FOR EXPRES ...

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