Award Data

CONSIDERABLE EFFORT HAS BEEN DEVOTED BY NASA AND OTHER ORGANIZATIONS COMMITTED TO THE UTILIZATION OF TETHERS IN SPACE. HOWEVER, MOST TETHER DEPLOYMENT SCENARIOS HAVE A COMMON DENOMINATOR--THEY ARE DEPENDENT ON THE REUSABILITY OF SUCH TETHERS IN ORDER TO BE CONSIDERED ECONOMICALLY VIABLE. THE LACK OF DATA ON POTENTIAL FOR TETHER DAMAGE AND THE REQUIREMENT FOR REUSING THE TETHER FOR ECONOMIC REASONS ...

THIS PROPOSAL IS TO SUPPORT NASA'S PROGRAM IN THE FIELD OF COMPUTER SIMULATIONS OF TURBULENT FLOWS OVER COMPLEX GEOMETRIES. THE INNOVATIVE TURBULENCE MODEL DESIGNED AT AMES RESEARCH CENTER BY MANSOUR, KIM AND MOIN (1987), CALLED THE MKM MODEL, WILL BE EXTENDED TO TREAT SEPARATED FLOWS. THE MKM MODEL IS A K-EPSILON MODEL DEVELOPED FROM A NEWLY-AQUIRED DATABASE OBTAINED FROM DIRECT SIMULATION OF A T ...

CONVENTIONAL OXYGEN SEPARATION FROM GASES HAS A LOW EXTRACTION EFFICIENCY AND REQUIRES A LARGE ENERGY SOURCE. AN INNOVATIVE LOW POWER, EFFICIENT OXYGEN EXTRACTOR COULD CAPTURE FREE OXYGEN FROM THE MARTIAN ATMOSPHERE FOR USE IN LIFE SUPPORT OR PROPULSION SYSTEMS. SINCE JANUARY 1985, THE DEFENSE DEPARTMENT HAS CONTRACTED WITH AQUANAUTICS CORPORATION TO EXTRACT DISSOLVED OXYGEN EFFICIENTLY FROM SEAWA ...

THE OVERALL PROGRAM GOAL IS A POSITION SENSITIVE CDTE NUCLEAR PARTICLE DETECTOR ARRAY WITH TOTAL AREA GREATER THAN50 CM2 AND RESOLUTION OF 1 MM2 OR LESS. AS A PHASE I FEASIBILITY DEMONSTRATION, A 100 ELEMENT SQUARE ARRAY OF 1-MM2 AREA, 2-MM THICK ELEMENTS WILL BE FABRICATED AND ANALYSED. CDTE DETECTORS HAVE THE GENERAL ADVANTAGES OF HIGH Z (48/52), ROOM TEMPERATURE OPERATION, A BULK CRYSTAL CONFIG ...

MOST TYPICAL PROBLEMS IN STRUCTURAL ENGINEERING ARE BEST ANALYZED BY APPROXIMATING AN OBJECT'S GEOMETRY WITH FINITE ELEMENTS. SELECTING AN APPROPRIATE MESHING STRATEGY FOR A GIVEN SOLID REQUIRES KNOWLEDGE ABOUT FINITE ELEMENT THEORY IN GENERAL, AND ABOUT PACKAGE-SPECIFIC DETAILS IN PARTICULAR. THE ADEPT SYSTEM INTEGRATES A TRADITIONAL SOLIDMODELER WITH AN EXPERT SYSTEM EQUIPPED WITH THIS KNOWLEDGE ...

THE OBJECTIVE OF THIS PROJECT IS TO DESIGN AND FABRICATE AN INNOVATIVE FINGERTIP-SHAPED TACTILE TELEPRESENCE SYSTEM FOR DEXTEROUS TELEROBOTIC SYSTEMS. THE PRINCIPAL TASKS TO BE PERFORMED ARE: (1) DESIGN OF VARIOUS MINIATURE TACTILE STIMULATOR ELEMENTS AND EVALUATION OF THE ACTUATION STRENGTH, DISPLACEMENT MAGNITUDE, FREQUENCY RESPONSE RANGE, AND THERMAL LOADING CHARACTERISTICS, (2) CONSTRUCTION OF ...

THIS R&D PROJECT INVESTIGATES THE USAGE OF A VECTOR-CONTROLLED MAGNETIC POWER DISTRIBUTION TECHNIQUE WHICH PROMISES THE FOLLOWING BENEFITS: (1) HIGH RELIABILITY, (2) LOW NOISE, (3) INHERENT SHORT-CIRCUIT/CURRENT LIMITING, (4) EASY SCALING FOR DIFFERING VOLTAGE/CURRENT LOADS, (5) CIRCUIT ISOLATION, (6) RADIATION HARD, (7) PRODUCIBLE AND REPEATABLE AND (8) RELATIVELY LOW COST.

WE PROPOSE TO DEVELOP A REUSABLE, PHOTOSENSITIVE PANEL TO CAPTURE IMAGES WHICH CAN BE USED TO PRODUCE HIGH RESOLUTION ELECTRONIC PHOTOGRAPHS. THE TECHNOLOGY INVOLVED PARALLELS THAT OF ZEROGRAPHY IN COPIERS; WE WILL USE ELECTRETS. ONCE THE IMAGE IS STORED ON THE DIELECTRIC PANEL IT CAN BE "READ" BY STIMULATING A PIXEL REGION WITH LASER LIGHT. ABSORBTION OR EXCITATION BY THE LIGHT IS A FUNCTION OF T ...

N/A

N/A