Award Data

THE VAPOR SPACE INSIDE AN AIRCRAFT FUEL TANK EITHER IS OR IS NOT FLAMMABLE (OR EXPLOSIVE) DEPENDING UPON THE PERCENTAGE OF FUEL VAPOR AND OF OXYGEN OF INERT GAS SUCH AS NITROGEN OR CARBON DIOXIDE. IT IS IMPORTANT TO KNOW THESE PERCENTAGES WHEN TESTING THE EFFICACY OF EXPERIMENTAL INERTING MEASURES BY FIRING LIVE ROUNDS AT TEST TANKS; BUT THERE IS NO FAST, CONVENIENT, FIELD METHOD OF MEASURING THE ...

THE INTER-RELATIONSHIP OF HYDROXL (OH-) CONTENT IN KTP WITH THE IONIC CONDUCTIVITY, OPTICAL ABSORPTION AT ( 4OO-5OONM ) AND THE ONSET OF "GREY TRACK" FORMATION WILL BE DETERMINED. MEASUREMENTS WILL BE MADE ON CRYSTALS GROWN BY THE HYDROTHERMAL, AND HIGH TEMPERATURE SOLUTION METHODS. THE EFFECTS OF ELECTRIC FIELDS AND THERMAL ANNEALING TREATMENTS ON OHCONTENT WILL BE EVALUATED. CORRELATIONS BETWEEN ...

Detection and identification of similar class military targets can be extremely difficult, especially at extended ranges. The wide variety of deployment scenarios further complicate this effort. In reality, the sensitivity of an imaging system and the contrast of targets can be strongly reduced. There have been several approaches (hardware solutions) to overcome the problem of optical image degra ...

THE PROJECT EXAMINES THE FEASIBILITY OF APPLYING HIGH TEMPERATURE SUPERCONDUCTIVITY (HTSC) TECHNOLOGY TO AUGMENT ESM RECEIVER SYSTEMS. HTSC IS AN ENABLING TECHNOLOGY WHICH POTENTIALLY ALLOWS A DEVICE TO BE CONSTRUCTED WHICH SORTS HIGH DUTY CYCLE (PULSE) SIGNALS AT DIRECT RF. THE ISOLATED PD/CW AND PULSE ENVIRONMENTS SRE THEN EASILY HANDLED BY SIMPLE SUPERHET AND WIDE BAND RECEIVERS, RESPECTIVELY. ...

THE OVERALL OBJECTIVE OF THIS PROJECT IS TO DESIGN AND OPERATE A LABORATORY-SCALE BIOLOGICAL TREATMENT SYSTEM CAPABLE OF DEGRADING TRICHLOROETHYLENE AND BENZENE, EACH PRESENT AT CONCENTRATIONS AS HIGH AS 50 PPM, TO CONCENTRATIONS OF 4 PPB OR LESS PER CONTAMINANT. THE PROCESS DESIGN WILL ENTAIL THE SIMULTANEOUS OR SUCCESSIVE DEGRADATION OF BOTH CONTAMINANTS BY A SELECTED ORGANISM(S) IN A SINGLE REA ...

HYDRIDE VAPOR PHASE EPITAXY (VPE) IS A WELL ESTABLISHED GROWTH METHOD FOR DEVICES SUCH AS INGAAS PHOTODETECTORS. RECENTLY, AN IMPORTANT SIMPLIFICATION OF THE METHOD WAS DEMONSTRATED IN WHICH IN-GA ALLOY SOURCES (INSTEAD OF SEPARATE IN AND GA METALS) WERE USED. FURTHERMORE, IT WAS DEMONSTRATED THAT INTENTIONALLY ADDED HCL COULD UNEXPECTEDLY PRODUCE TERNARY ALLOYS OF CONSTANT COMPOSITION. EPITAXX PR ...

SBIR Phase-I program investigation into a Wide Band Gap (WBG) technology and its ability to meet the Air Force specifications for a High Power Amplifier (HPA) demonstrated unequivocally the feasibility of meeting/exceeding this objective with GaN HEMT devices. The 50W power achievable over a multi-octave bandwidth of [200MHz-1,000MHz] and [1,000MHz-4,000MHz] with efficiencies [PAE] exceeding 40%, ...

Directed Energy weapon systems are being developed for both ground and airborne applications. Typically, they consist of microwave or laser powered guns. Both the microwave application and the diode based laser applications require significant amount of power. Application of power is a transient phenomenon that takes time and its effects ripple through the whole system. In this case, the large ap ...

THE WIDESPREAD PRESENCE OF CHLORINATED AND NONCHLORINATED ORGANICS IN BOTH NATURAL AND TREATED WATER AT MANY AIR FORCE BASES POSES A SERIOUS ENVIRONMENTAL AND HEALTH PROBLEM, SINCE SUCH UBIQUITOUS HALOCARBONS AS TRICHLOROETHYLENE (TCE) AND CHLOROFORM ARE CARCINOGENIC AND/OR TOXIC. CURRENTLY, THE MOST COMMON TECHNOLOGIES FOR REMOVING ORGANICS FROM GROUNDWATER ARE ACTIVATED CARBON ADSORPTION AND COU ...

High performance military gas turbine engines are often equipped with augmenters also known as afterburners, to provide increased levels of thrust for relatively short periods of time. The level of thrust desired is determined by the requirement for specific excess power for maneuver. However, the augmentation level, which can be supplied by engines, is limited by the oxygen in the air after the ...