Abstract:MEASUREMENT OF POSTURAL SWAY IS NOW BEING USED TO INVESTIGATE THE EFFECTS OF DRUGS, TOXINS, AND AGING ON THE NEUROMUSCULAR SYSTEM OF HUMANS AND TO DEVISE STRATEGIES TO HELP ELDERLY INDIVIDUALS REDUCE THE RISK OF FALLING. ONE POPULAR METHOD OF MEASURING SWAY IS WITH A FORCE PLATFORM; HOWEVER, CURRENT… more
Abstract:THE IMPACT ATTENUATION PROPERTIES OF PLAYGROUND SURFACES AFFECT THE LIKELIHOOD OF HEAD INJURIES DUE TO FALLS. LABORATORY TESTING EVALUATES THE IMPACT PROPERTIES OF PLAYGROUND SURFACES, BUT NO FIELD TEST INSTRUMENTS ARE AVAILABLE. EASE-OF-USE, DURABILITY, AND COST ALL AFFECT THE COMMERCIAL SUCCESS OF… more
Abstract:A combustible mixture is compressed in the crankcase of a four-stroke cycle engine and forced into a boost plenum which houses the camshaft. The compressed mixture is metered by a throttle to intake valves of the engine. The engine is constructed from identical engine block elements rotated and… more
Company:A & D Assoc.Agency/Program/Year/Phase:DOD / SBIR / 1992 / 1
Abstract:MODERN COMPUTATION TECHNIQUES SUCH AS PARALLEL PROCESSING ARE WELL-SUITED FOR THE SOLUTION OF SUCH PROBLEMS AS THE SIMULTANEOUS GLOBAL EXTREMIZATION OF MULTIPLE VARIABLES IN A COMPLEX, NONLINEAR, PROBABILISTIC STATE SPACE. HOWEVER, THE USE OF THESE TECHNIQUES TO SOLVE A GIVEN PROBLEM REQUIRES THAT… more
Abstract:ADEQUATE ELECTRICAL POWER FOR SPACECRAFT OPERATIONS IS A CRUCIAL MISSION TASK. THE ISOTOPE HEAT SOURCES USED IN RADIO-ISOTOPE-THERMOELECTRIC-GENERATORS FOR MANY NASA MISSIONS ARE EXPENSIVE. FOR A GIVEN ELECTRICAL POWER, THERMAL-TO-ELECTRIC CONVERSION WITH AMTEC RATHER THAN CONVENTIONAL… more
Abstract:THE PROJECT WILL DEVELOP A NOVEL MINIATURE PULSE WIDTH MODULATED POWER DRIVER FOR ACTUATORS, I.E. DC MOTOR. THE POWER DRIVER WILL DELIVER 50 AT 50VDO IN A DOUBLE INON PACKAGE. THIS COMPACT DESIGN CAN ONLY BE ACHIEVED THROUGH THE INNOVATIVE COMBINATION OF MODER POWER SEMICONDUCTOR TECHNOLOGIES,… more
Abstract:AVALANCHE PHOTODIODES THAT HAVE LARGE AREA (CURRENTLY 17 MM ACTIVE-AREA DIAMETER BUT POTENTIALLY UP TO 75 MM), UNIFORM HIGH GAIN, AND LOW NOISE, WHEN COMBINED WITH A HIGH VOLTAGE VACUUM PHOTODIODE "FRONT END," MAKE POSSIBLE A HYBRID PHOTODETECTOR THAT COMBINES THE STRENGTHS OF PHOTOMULTIPLIERS AND… more
Abstract:Phase I will analyze use of a hypervelocity launcher to provide ahigh mass (2 to 20 kilograms), hypervelocity (4 km\sec) demonstrator for a Theater Missile Defense (TMD) System. Current ballistic powder guns, along with one and two stage light gas guns, cannot meet the high mass requirements while… more
Abstract:MODERN COMPUTER TECHNOLOGY OFFERS THE CAPABILITY TO PERFORM REAL-TIME PROCESSING OF MATHEMATICAL MODELS FAR MORE SOPHISTICATED THAN THOSE CURRENTLY BEING UTILIZED IN TRAINING APPLICATIONS. THE CAPABILITY TO COST EFFECTIVELY IMPLEMENT BLADE ELEMENT ROTOR MODELS IN REAL TIME USING MULTIPROCESSOR… more
Abstract:SINGLE ROTOR HELICOPTERS HAVE OFTEN ENCOUNTERED AN UNANTICIPATED RIGHT YAW (URY). THIS OCCURS PREDOMINANTLY AT LOW SPEED IN GROUND EFFECT WITH THE RELATIVE WIND FROM THE LEFT OR REAR. THIS APPEARS TO BE CAUSED BY AERODYNAMIC INTERFERENCE PHENOMENA THAT CAN ONLY BE ANALYTICALLY MODELED BY A FREE… more
Abstract:THE SOLID-STATE VISIBLE AND INFRARED MULTIPLIER (SVIRM) DETECTOR WILL AMPLIFY THE SIGNAL FROM A SINGLE VISIBLE OR INFRARED PHOTON, ABOVE READOUT NOISE, WITH LOW DARK-CURRENT, MAKING THE PHOTON DETECTABLE. THE SVIRM USES A NOVEL SILICON STRUCTURE. THE ADVANTAGES OVER CONTEMPORARY STATE DETECTORS ARE… more
Abstract:This proposal describes an innovative and proprietary multiple detector focal plane assembly (FPA) designed to be used for high resolution 3 dimensional imaging (staring) underwater laser radar. This FPA design has the fallowing characteristics: - Can be used to determine the time-of-arrival of a… more
Abstract:THIS IS AN APPLICATION FOR AN AUTORADIOGRAPHIC DIGITAL IMAGER (ADI). THE ADI IS AN INNOVATIVE REAL-TIME IMAGER, UTILIZING STATE-OF-THE-ART IMAGE TUBE AND SOLID-STATE DETECTOR ARRAY AND MICROCURCUIT TECHNOLOGY, TO ACQUIRE BIOPSY RADIOPHARMACEUTICAL SPATIAL DISTRUBUTIONS. ADI RESOLUTION IS EXPECTED TO… more
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