Award Data

THE POLARIZATION CHARACTERISTICS OF AIRCRAFT INFRARED SIGNATURES HAVE BEEN STUDIED AS A MEANS TO ENHANCE THE PERFORMANCE OF LONG RANGE PASSIVE INFRARED DETECTION SYSTEMS OPERATING IN THE PRESENCE OF CLUTTER. THESE STUDIES ALSO GENERATED EVIDENCE THAT THE AMOUNT AND ANGLE OF POLARIZATION AS WELL AS ITS SPATIAL DISTRIBUTION ARE UNIQUE BETWEEN DIFFERENT TYPES AND CLASSES OF AIRCRAFT. IT MAY BE POSSIB ...

THE PRESENT NEED TO TEST IR SUPPERSSORS ON APPLICATION ENGINES INCURS SIGNIFICIANT COSTS DUE TO THE REQUIREMENTS OF A FULL-SCALE ENGINE INCLUDING: ITS FUEL UE, SAFE EXHAUST DISPOSAL, AND THE NECESSITY OF UTILIZING FULL-SCALE, HEAT-RATED SUPPRESSOR PROTOTYPES. THESE COSTS CAN BE REDUCED USING A CORRECTLY SCALED AMBIENT TEMPERATURE TEST FACILITY. RELIABLE ESTIMATES OF GAS TURBINE ENGINE EXHAUST SYST ...

THE PROPOSED PROGRAM WOULD PROVIDE THE AIR FORCE BALLISTIC SYSTEMS DIVISION (BSD) WITH AN ENGINEERING LEVEL SIGNATURE MODELING CAPABILITY FOR VARIOUS TYPES OF REENTRY VEHICLES (RVS) DURING THE MIDCOURSE PHASE. THE PRESENT AERODYNE RESEARCH, INC. (ARI) SPIRITS SIGNATURE MODEL OFFERS THE BASSIS FOR THE MODELING CAPABILITY IN THE ULTRAVIOLET (UV) THROUGH THE INFRARED (IR) SPECTRUM. THE SPIRITS MODEL ...

WE PROPOSE TO DEVELOP A PATTERNED ETCHING TECHNIQUE FOR INFRARED DETECTOR ARRAYS BASED ON PHOTO-INDUCED ETCHING OF HGCDTE THAT IS COMPATIBLE WITH THE ULTRA-HIGH VACUUM ENVIRONMENT OF A MOLECULAR BEAM EPITAXY APPARATUSES. THE PHASE I RESEARCH FOCUSES ON ESTABLISHING THE EFFICACY OF SUITABLE GAS PHASE PRECURSORS FOR THE ETCHING PROCESS. IF THE PHASE I RESEARCH IS SUCCESSFUL, OPTICAL PROJECTION TECHN ...

ATMOSPHERIC CARBON MONOXIDE (CO) IS IMPORTANT BOTH AS AN ANTHROPOGENIC POLLUTANT AND AS A PARTICIPANT IN THE PHOTOCHEMISTRY OF THE (NOMINALLY) UNPOLLUTED ATMOSPHERE. INTHE LATTER CONTEXT, THERE EXISTS A NEED FOR A SIMPLE AND CONVENIENT INSTRUMENT TO MEASURE CO CONCENTRATIONS IN THE RANGE OF A FEW TENS OF PPB. WE PROPOSE TO DO THIS BY MEASURING THE ABSORPTION, BY THE INFRARED R16 LINE OF CO, OF THE ...

WE PROPOSE THE INVESTIGATION OF NUCLEATION PROCESSES CAPABLEOF CAUSING THE FREEZING OF SUPERCOOLED WATER DROPLETS IN FRONT OF A MOVING SUBSONIC AIRCRAFT. THE GOAL IS TO DEVELOPA NUCLEATION MECHANISM CAPABLE OF FREEZING THE WATER DROPLETS FAR ENOUGH IN FRONT OF THE MOVING PLANE SO THAT BY THE TIME THE PLANE REACHES THE DROPLETS THEY ARE FROZEN AND BOUNCE FROM THE LEADING EDGES AND THE IMPENAGE, WIT ...

THE EMERGENCE OF EO MULTISPECTRAL IMAGING TECHNOLGOY MOTIVATES EXLORATION OF POTENTIAL IMPROVEMENTS IN AUTOMATIC TARGET RECOGNITION (ATR) SYSTEM PERFORMANCE USING NOVEL SPECTRAL/SPATIAL TECHNIQUES. SUCHCONCEPTS OFFER A PROMISING COMBINATION OF COMPLEMENTARY TECHNIQUES, WITH THE SPECTRAL COMPONENET REDUCING CLUTTER AMBIGUITY FOR SPATIAL PROCESSING WHICH SIFTS HIGH-VALUE TARGETS FROM THOSE OF NON-IN ...

THE METHYL RADICAL IS A KEY SPECIES IN THE FORMATION OF CVD DIAMOND, FOR WHICH THERE IS A NEED FOR AN ON-LINE MONITOR USABLE IN INDUSTRIAL PRODUCTION OF CVD DIAMOND. WE PROPOSE TO MONITORMETHYL RADICAL CONCENTRATIONS USING THE ABSORPTION OF THE INFRARED OUTPUT OF A NEUTRAL XENON LASER AT 3217.75 WAVENUMBERS. THE PHASE I EXPERIMENTS WILL MEASURE THIS ABSORPTION IN AN RF METHANE PLASMA, IN WHICH MET ...

HALON 1301 (CF3BR) IS CURRENTLY IN WIDE SPREAD USE ON NAVAL VESSELSAS AN EFFECTIVE AND NON-TOXIC ACTIVE AGENT IN FIRE SUPPRESSION SYSTEMS. UNFORTUNATELY, FUTURE MANUFACTURE AND USE OF CF3BR MAY BE SEVERELY RESTRICTED DUE TO ITS ROLE AS A POTENT AGENT IN STRATOSPHERIC OZONE DEPLETION CHEMISTRY. ALTERNATIVE FIRE SUPPRESSION CHEMICALS NEED TOBE IDENTIFIED AND ASSESSED TO REPLACE HALON 1301 IN NAVAL S ...

NITRIC ACID IN THE GAS PHASE IS ONE OF THE MOST ABUNDANT TRACE NITROGEN OXIDE SPECIES IN THE ATMOSPHERE. ITS DEPOSITION AT THE SURFACE PROVIDES THE MAJOR SINK FOR NOX AND IS A SIGNIFICANT COMPONENT OF ACID PRECIPITATION. THE GOAL OF THIS PROJECT IS TO DEVELOP AN INSTRUMENT TO MEASURE THE SURFACE FLUXES OF NITRIC ACID USING THE EDDY CORRELATIONTECHNIQUE WITH INFRARED TUNABLE DIODE LASER ABSORPTION ...