Award Data

THE ATMOSPHERE CONTAINS MANY NATURALLY OCCURRING AND MANMADE FINE PARTICLES AND AEROSOLS. THESE PARTICLES AFFECTWEATHER, AIR QUALITY AND COMMUNICATIONS. KNOWLEDGE OF THEIRCONCENTRATION, COMPOSITION, DISTRIBUTION AND TRANSPORT IS IMPORTANT TO THE PREDICTION OF WEATHER, DETECTION AND CONTROL OF POLLUTION, HEALTH MONITORING OF VEGETATION AND ATMOSPHERIC CHEMISTRY. WHILE A METHODS PRESENTLY EXIST FOR ...

THE GLOBAL ENVIRONMENTAL RESEARCH COMMUNITY HAS URGENT NEED FOR AN AUTOMATED, STAND-ALONE AQUATIC NUTRIENT ANALYZER. PRELIMINARY STUDIES AT AERODYNE HAVE SHOWN THAT EXCIMER LASER VAPORIZATION OF WATER DROPLETS CAN BE ACHIEVED. SPECTRALLY RESOLVED EMISSION FROM DISSOLVED SPECIES OR THEIR EXCITED FRAGMENTS, CREATED BY THE VAPORIZATION LASER PULSE, HAVE ALSO BEEN OBSERVED. THESE PHENOMENA HOLD THE PR ...

THIS PROJECT CONCERNS THE DEVELOPMENT OF AN ADVANCED TOUCH SENSOR FOR USE WITH TELEOPERATOR DEVICES. THE INNOVATION CONSISTS OF A COMPACT, FINGERTIP-SHAPED, OPTICAL TACTILE SENSOR WITH A SHAPE, SIZE, FORCE SENSITIVITY, AND SPATIAL RESOLUTION CORRESPONDING TO THAT OF A HUMAN FINGERTIP. WHENCOMPLEMENTED WITH A TACTILE STIMULATOR, TOGETHER THEY WOULD IMPROVE AN OPERATOR'S SENSE OF PRESENCE, THEREBY I ...

N/A

THE PRIMARY OBJECTIVE OF THIS STUDY IS TO EVALUATE THE FEASIBILITY OF DEVELOPING A REAL-TIME 3-D DYNAMIC ROBOT VISION SYSTEM FOR USE STS ASSEMBLY, CONSTRUCTION, AND ROUTINE MAINTENANCE. THE BASIC TECHNIQUE PROPOSED FOR STUDY USES THE "FLOW-FIELD" INFORMATION IMPLICIT IN ALL IMAGED SCENES INVOLVING RELATIVE MOTION BETWEEN IMAGING SENSOR AND VIEWED OBJECTS, AND USES IT TO GENERATE A DYNAMICESTIMATE ...

N/A

IN THE PROPOSED PROGRAM THE PERFORMANCE AND DISCHARGE CAPACITY OFF LITHIUM CELLS WITH CARBON CATHODES AND 1, 3-DIOXOLANE-BASED ELECTROLYTES WILL BE DETERMINED. INITIAL DATA SHOW THAT THIS LI/DIOX/C CELL WILL BE A PRIMARY LITHIUM BATTERY WITH THE RATE CAPABILITY AND DISCHARGE CAPACITY OF A LI/SOC12 BATTERY BUT WITH A NON-CORROSIVE ELECTROLYTE AND 25% SECONDARY CAPACITY. THIS NEW CLASS OF LITHIUM BA ...

N/A

THE "WEEPING WING" CONCEPT, IN WHICH A DEICING FLUID IS SLOWLY PUMPED THROUGH PORES IN A LEADING EDGE SURFACE TO REMOVE ACCUMULATED ICE AND PREVENT ADDITIONAL ICE FORMATION,HAS PROVEN VERY EFFECTIVE. COMMERCIAL AND DEVELOPMENTAL VERSIONS EMPLOY SINTERED STAINLESS STEEL OR LASER DRILLED TITANIUM AS THE LEADING EDGE MATERIAL. A LIGHTER, MORE COST-EFFECTIVE SYSTEM COMPATIBLE WITH COMPOSITE SUBSTRATE ...

TO EFFICIENTLY (IN TERMS OF SIZE, WEIGHT AND COMPLEXITY) MANAGE THE THERMAL SYSTEMS ON-BOARD SPACECRAFT, NASA HAS EXPLOITED THE THERMAL CHARACTERISTICS OF TWO-PHASE FLOW THERMAL CONTROL NETWORKS. SYSTEM CONCEPTS, DEVELOPED TO DATE, INCLUDE THE USE OF COMPLEX SENSOR CONTROLLED MODULATING VALVES TO REGULATE THE TRANSPORT OF HEAT FROM SPACECRAFT MODULES TO CENTRAL RADIATORS FOR REJECTION. THISSYSTEM ...