Award Data

THE NASA TECHNICAL SOLICITATION REQUESTED INNOVATIVE APPLICATIONS OF NEW MATERIALS FOR USE IN HEAT TRANSPORT AND COOLING. THIS PROPOSAL DESCRIBES AN EFFORT TO DEMONSTRATE THE FEASIBILITY OF USING COMPOSITE MATERIALS IN THE CONSTRUCTION OF AMBIENT TEMPERATURE HEAT PIPES. CARBON COMPOSITE MATERIALS ARE RECOGNIZED FOR THEIR SIGNIFICANT STRENGTH TO WEIGHT RATIO AND STIFFNESS. THE SUCCESSFUL DEVELOPMEN ...

REALIZATION OF THE PERFORMANCE ADVANTAGES OF SUPERCONDUCTING DEVICES IN HIGH FREQUENCY COMMUNICATIONS DEPENDS ON DEVELOPMENT OF A LOW TEMPERATURE DEPOSITION PROCESS WITH EXACTING CONTROL OF STOICHIOMETRY AND MORPHOLOGY. MOCVD CAN MEET THESE NEEDS COUPLED WITH EASE OFSCALE-UP. HOWEVER, RECENT WORK AT ADVANCED TECHNOLOGY MATERIALS, INC. SHOWS THAT YBACUO AND BISRCACUO FILMS GROWN BY MOCVD AT TEMPERA ...

AN INNOVATIVE APPROACH IS PROPOSED TO DEVELOP AN ANALYSIS FOR LIQUID FLOWS WITH VAPOR BUBBLES, SUCH AS THOSE WHICH OCCUR IN BEARINGS, SEALS, AND PUMPS IN LIQUID ROCKET ENGINES. THE APPROACH IS BASED ON A COMBINED EULERIAN-LAGRANGIAN ANALYSIS, IN WHICH THE CONTINUOUS (LIQUID) PHASE IS TREATED BY SOLVING A SYSTEM OF EULERIAN CONSERVATION EQUATIONS, WHILE THE DISCRETE (VAPOR BUBBLE) PHASE IS DEALT WI ...

THE IMPORTANCE OF REDUCING THE NOISE EMITTED BY HELICOPTER ROTORS HAS BEEN WIDELY RECOGNIZED FOR MANY YEARS. PREVIOUS WORK BY CONTINUUM DYNAMICS IN THE ANALYSIS OF ROTOR AEROACOUSTICS LED TO THE DEVELOPMENT OF AN EFFICIENT AND ACCURATE LAGRANGIAN SIMULATION OF THE UNSTEADY VORTICITY FIELD IN THE VICINITY OF HELICOPTER MAIN ROTOR THAT COULD SERVE AS THE FOUNDATION FOR A GENERAL ANALYSIS OF THE NOIS ...

AMONG THE POTENTIAL APPLICAITONS OF THE NEW HIGH-TEMPERATURECERAMIC SUPERCONDUCTORS ARE MICROWAVE DEVICES FOR COMMUNICATIONS APPLICATIONS. FABRICATION OF SUCH DEVICES WILL REQUIRE WILL-CONTROLLED TECHNIQUES FOR PREPARING THIN FILMS OF THE MATERIALS ON SUBSTRATES HAVING LOW MICROWAVE LOSSES SUCH AS SINGLE-CRYSTAL ALUMINA (SAPPHIRE). THE INNOVATIVE FEATURE OF THIS PROJECT WILL BE TO FORM HIGH- TEMPE ...

THE SPACE BIOLOGY COMMUNITY HAS A WELL DEFINED NEED FOR IN-FLIGHT CENTRIFUGATION FACILITIES TO PROVIDE BOTH EXPERIMENTAL HYPOGRAVITY STIMULATIONS TO TEST SUBJECTS, AND THE NECESSARY 1 G "CONTROL" ENVIRONMENT FOR COMPARISONS WITHMICRO-G DATA. RECENTLY, RENEWED INTEREST HAS DEVELOPED IN FREE-FLYING SATELLITES LAUNCH FROM EXPENDABLE VEHICLES AND THE DEVELOPMENT OF EXPERIMENTS TO TAKE ADVANTAGE OF SUC ...

CURRENT NASA REQUIREMENTS INCLUDE A NEED FOR ONE METER LONG LOW TEMPERATURE HEAT PIPES CAPABLE OF CARRYING 5 TO 50 W OF POWER WITH EVAPORATOR HEAT FLUXES AS HIGH AS 1 W/IN(2). AXIALLY GROOVED HEAT PIPES ARE UNDESIRABLE FOR SOME APPLICATIONS BECAUSE OF POOR LIFT AND/OR LOW EVAPORATIVE HEAT TRANSFER COEFFICIENT. RECENT ADVANCES IN SINTERED POWDER METAL TECHNOLOGY AT THERMACORE HAVE RESULTED IN SINTE ...

IMPROVEMENT IN THE INTERNAL COOLING OF TURBINE BLADES IS IMPORTANT TO CONTINUATION OF THE TREND TOWARDS HIGHER TURBINE INLET TEMPERATURES THAT CAN PROVIDE PERFORMANCE, SIZE AND DURABILITY ADVANTAGES FOR CURRENT AND FUTURE GAS-TURBINE ENGINES. KNOWLEDGE OF THE DETAILED FLOW STRUCTURE IN INTERNAL PASSAGES OF TURBINE BLADES IS NEEDED TO UNDERSTAND MEASURED HEAT TRANSFER PHENOMENA AND TO VALIDATE COMP ...

THE INNOVATION BEING ADDRESSED IN THIS PROPOSAL IS A NEW ARCHITECTURE FOR ARTIFICIAL INTELLIGENCE SYSTEMS CALLED EAGOL. UNLIKE TYPICAL AI SHELLS, THIS SYSTEM INCORPORATES A STRONG REASONING MODEL DERIVED FROM DETAILED COGNITIVE STUDIES OF DECISION MAKING IN A VARIETY OF ARENAS, INCLUDINGINTERNAL MEDICINE DIAGNOSIS, OPERATIONS OF NUCLEAR POWER PLANTS, AND INTELLIGENCE ANALYSIS. PRINCIPAL FEATURES O ...

COSTS FOR MISSIONS IN SPACE CAN BE REDUCED SIGNIFICANTLY BY UTILIZING LUNAR RESOURCES. CONSIDERING THE GREAT INTEREST IN THE AVAILABILITY OF OXYGEN, WE PROPOSE TO INVESTIGATE ITS ELECTROLYTIC PRODUCTION FROM MOLTEN SALT. THIS PROCESS USES LUNAR SOIL WITH MINIMUM OR NO BENEFICIATION AND DOES NOT PRODUCE ANY WASTE. A METAL ALLOYIS OBTAINED AS A USEFUL BYPRODUCT. THIS APPROACH HAS BEEN SUGGESTED BY E ...