Award Data

THERMAL MANAGEMENT SYSTEMS FOR HYPERSONIC AEROSPACE VEHICLES MUST SIMULTANEOUSLY MEET THREE CHALLENGING REQUIREMENTS: (1) HEAT MUST BE REMOVED AT VERY HIGH HEAT FLUXES FROM SURFACES SUCH AS THE COMBUSTION CHAMBER WALL AND AERODYNAMICALLY HEATED SURFACES, (2) THE PROPELLANT MUST BE PREHEATED TO VERY HIGH TEMPERATURES PRIOR TO COMBUSTION, AND (3) THE SYSTEM'S SIZE AND MASS MUST BE HELD TO A MINIMUM. ...

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CONSIDERABLE ATTENTION HAS BEEN FOCUSED UPON THE POSSIBLE USE OF TOXIC BIOLOGICAL AGENTS IN BOTH SOUTHEAST ASIA AND AFGHANISTAN. SUCH REPORTED INCIDENTS INDICATE A NEED FOR IMPROVING THE UNITED STATES' CAPABILITY OF ACCURATELY DETECTING A VARIETY OF NATURALLY OCCURRING TOXINS. ONE SUCH TOXIN OF CONSIDERABLE INTEREST IS ANATOXIN-A, A SECONDARY METABOLITE OF THE CYANOBACTERIA (BLUE-GREEN ALGAE) ANAB ...

THE SAFE, RELIABLE, AND EFFICIENT OPERATION OF NUCLEAR POWER PLANTS REQUIRES ADVANCED OPERATOR DECISION AIDS AS WELL AS CONTROL AND PROTECTION SYSTEMS. A PREDICTIVE EXPERT SYSTEM FOR PLANNING POWER MANEUVERS WILL BE INVESTIGATED AS ONE SUCH OPERATOR AID. IN THE PHASE I WORK THE FEASIBILITY OF THE SYSTEM WILL BE DEMONSTRATED VIA A ROBUST NEUTRONICS MODEL, USING THE TRANSIENT FEW-GROUP NEUTRON DIFFU ...

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USE OF ATOMIC LAYER EPITAXY IS BEING INVESTIGATED FOR GROWING SINGLE CRYSTAL ALGAN LAYERS. THE FORMATION OF NITROGEN VACANCIES IS EXPECTEDTO BE SUPPRESSED BY THE UNIQUE ATOMIC LAYER DEPOSITIONS AND THE EXCITATION OF NH3 GAS BY A LASER SOURCE. THIS SHOULD RESULT IN HIGH QUALITY LARGE AREA SINGLE CRYSTAL LAYERS OF ALGAN WHICH COULD BE USED TO MAKE SOLAR BLIND ULTRA-VIOLET (UV) SENSORS. THESE THIN EP ...

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COMPUTATIONAL FLUID DYNAMICS (CFD) OFFERS SIGNIFICANT OPPORTUNITIES IN THE DESIGN OF V/STOL FIGHTER AIRCRAFT. THERE IS ENORMOUS SCOPE FOR A SYNERGISM BETWEEN CFD AND WIND TUNNEL TESTING, AFFORDING GREATER EFFICIENCY IN THE REDUCTION OF DATA AND A QUICKER GRASP OF ITS SIGNIFICANCE. MOREOVER, CFD SHOULD BE ABLE TO DRASTICALLY REDUCE THE NUMBER OF TESTS THAT ARE NEEDED. THE OVERALL PROJECT OBJECTIVE ...

THE INTEGRAL FAST REACTOR CONCEPT HAS THE POTENTIAL TO PROVIDE SUBSTANTIAL IMPROVEMENTS IN THE SAFETY AND EFFICIENCY OF NUCLEAR POWER PRODUCTION. METALLIC NUCLEAR FUEL IN THE SHAPE OF LONG, THIN RODS IS THE FUEL USED BY THEINTEGRAL FAST REACTOR. THE METALLIC NUCLEAR FUEL RODS ARE PRESENTLY FABRICATED IN A BATCH-CASTING PROCESS THAT UTILIZES QUARTZ TUBES OF PRECISE DIMENSIONS AS MOLDS. IN THIS PROC ...

THERE IS A NEED FOR RELIABLE, HIGH EFFICIENCY PUMPS TO CIRCULATE HELIUM THROUGH SUPERCONDUCTING MAGNETS IN THE PROPOSED SUPERCONDUCTING SUPER COLLIDER (SSC). THE PUMPS MUST BE CAPABLE OF OPERATING OVER A RANGE OF CONDITIONS TO ACCOMMODATE A VARIETY OF SYSTEM OPERATIONS. THIS PROJECT ISAIMED AT THE DEVELOPMENT OF A HIGH SPEED HELIUM PUMP WITH INDUSTRIAL-LEVEL ROBUSTNESS TO MEET THE SSC REQUIREMENTS ...