Award Data

RECENT SHUTTLE FLIGHTS HAVE SHOWN THAT SIGNIFICANT TEMPORARYOR PERMANENT DEGRADATION OF OPTICAL SURFACES CAN OCCUR IN FLIGHT. SEVERAL OSMIUM-COATED SAMPLES, FLOWN ON SHUTTLE FLIGHT STS 5, EXPERIENCED A PERMANENT LOSS OF REFLECTIVITY BY FACTORS OF 2-3 IN THE VACUUM ULTRAVIOLET PORTION OF THE SPECTRUM. OTHER COATING MATERIALS AND WINDOWS CARRIED ABOARD EARLIER SHUTTLE FLIGHTS SUFFERED LESS OR EVEN N ...

THIS STUDY WILL DETERMINE CLOUD PROPERTIES FROM LANDSAT 4 THEMATIC MAPPER (TM) DATA BY COMBINING A SPATIAL COHERENCE APPROACH WITH A VARIETY OF CLOUD PARAMETER RETRIEVAL METHODS. THE TM HAS SEVEN SPECTRAL BANDS WHICH, IN PRINCIPLE, ALLOW CLOUD AMOUNT, HEIGHT, PHASE, AND THICKNESS TO BE RETRIEVED. CLOUD PARTICLE SIZE MAY ALSO BE RETRIEVABLE. THE SPATIAL COHERENCE APPROACH WILL ACCOUNT FOR PARTIAL B ...

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THIS PROJECT EVALUATES THE USE OF RAYLEIGH SCATTERING TECHNIQUES FOR USE AS A TEMPERATURE MONITOR IN THE SEVERE ENVIRONMENT OF GAS TURBINES. POTENTIAL ADVANTAGES OF THIS TECHNIQUE OVER ALL OTHER PRESENTLY USED METHODS ARE HIGH ACCURACY (+/-10K), EASE OF INSTALLATION, HIGH SPATIAL AND TEMPORAL RESOLUTION, AND NONINTRUSIVE OPERATION. THIS PHASEOF THE PROGRAM CONSISTS OF DETAILED FEASIBILITY CALCULAT ...

THIS IS A PROJECT TO ESTABLISH THE FEASIBILITY OF A TECHNIQUE FOR FORMING HOLOGRAMS FOR THREE DIMENSIONAL IMAGES OF COMPUTER-GENERATED OBJECTS IN REAL-TIME POINT BY POINT. THIS PROPRIETARY TECHNIQUE IS A METHOD FOR QUICKLY MOVING POINTS OF LIGHT THROUGH A THREE-DIMENSIONAL OBJECT VOLUME. THIS NEW METHOD, ALONG WITH THE YOUNG TECHNOLOGY OF REAL-TIME THERMO-PLASTIC RECORDING MATERIALS, WILL OVERCOME ...

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FOR MANY YEARS MERCURIC IODIDE HAS APPEARED TO BE AN IDEAL MATERIAL FOR USE AS AN UNCOOLED X-RAY AND GAMMA-RAY DETECTOR. IT HAS DEMONSTRATED EXCEPTIONAL ENERGY RESOLUTIONFOR LOW ENERGY X-RAYS AND HAS BEEN CONSIDERED FOR SEVERAL NASA SPACE MISSIONS. HOWEVER, MERCURIC IODIDE DETECTORS HAVE BEEN PLAGUED BY SEVERE INSTABILITY PROBLEMS RELATED TO THE CHEMICAL AND PHYSICAL PROPERTIES OF THE MERCURIC IOD ...

AN IMPORTANT GOAL OF THE NASA MEDICAL SCIENCES PROGRAM IS TO MAINTAIN THE HEALTH OF THE ASTRONAUTS BOTH BEFORE AND DURING THE SPACE MISSIONS. TWO OF THE MOST IMPORTANT CLINICAL PARAMETERS ARE THE LEFT AND RIGHT HEART EJECTION FRACTIONS. THESE PARAMETERS, WHICH ARE SO CENTRAL TO GOOD VASCULAR PERFORMANCE ARE ALSO ONES WHICH COULD BE STRONGLY EFFECTED BY THE STRESS AND GRAVITY EFFECTS OF THE FLIGHTS ...