Award Data

Nighttime operations are very attractive for the U.S. Armed Forces since these conditions generally maximize their advantage over the opposing forces. The deployment of IR countermeasures to protect aircraft from heat-seeking missiles, however, may remove the advantage of nighttime conditions and expose the aircraft to anti-aircraft artillery and small arms fire. Therefore, a need exists for an IR ...

The process of designing and evaluating advanced aircraft coatings can be made more efficient, more robust, and less expensive through application of highly accurate and flexible computer models. The General Scattered Light (GSL) model is such a signature analysis tool, but its potential is difficult to access by untrained or infrequent users, seriously limiting its value. We propose to overcome t ...

FERROELECTRIC SELF-ASSEMBLED MONOLAYERS ARE BEING CREATED BY CHEMICALLY MODIFYING MONOLAYERS OF ADSORBED N-ALKANETHIOLS IN VACUUM. THE SURFACE POTENTIALS OF THE RESULTING THIN FILMS ARE MEASURED AS A FUNCTION OF TEMPERATURE AND PYROELECTRIC COEFFICIENTS AND FIGURES OF MERIT FOR THE MODIFIED FILMS DERIVED. THESE MONOLAYERS SHOULD BE EXCELLENT MATERIALS FOR ADVANCED ROOM TEMPERATURE PYROELECTRIC D ...

NASA space flight equipment test facilities require a monitoring device for airborne vapors of the rocket fuels hydrazine, monomethylhydrazine (MMH) and unsymmetrical dimethylhydrazine (UDMH). The ideal monitor will be portable, respond rapidly and specifically to hydrazines, and be sensitive at the 10 ppb level or below. Infrared direct absorption techniques have much to offer in terms of simplic ...

THE POSSIBILITY THAT ATOMIC CHLORINE CONCENTRATIONS IN THE MARINE SURFACE LAYER ARE LARGE ENOUGH TO COMPETE WITH OH AS THE MAJOR TROPOSPHERIC OXIDIZER HAS RECEIVED CONSIDERABLE SPECULATION. CHLORINE ATOMS PARTICIPATE IN THE OXIDATION OF HYDROCARBONS AND DIMETHYL SULFIDE AND CAN ALSO DIRECTLY INFLUENCE TROPOSPHERIC OZONE LOSS THROUGH CATALYTIC CYCLES WITH C1O AND HO2 RADICALS. THE NET EFFECT ON T ...

ANALYSIS OF THE STABLE ISOTOPES IN ATMOSPHERIC METHANE SAMPLES CAN BE USED TO IDENTIFY LOCAL SOURCES AND TO DEFINE THE GLOBAL BUDGET OF THIS RADIATIVELY IMPORTANT GREENHOUSE GAS. THE PROJECT IS DEVELOPING A PORTABLE AND LESS EXPENSIVE ALTERNATIVE TO ISOTOPE MASS SPECTROMETRY FOR MEASURING (13)CH4 AND CH3D COMPONENTS IN METHANE SAMPLES. THE METHOD IS BASED ON INFRARED ABSORPTION USING A HELIUM NE ...

High intensity cooling of expansion turbine blades is proposed, using a self-stabilized evaporation/condensation process within each blade. The result is low blade structural temperature, with waste heat delivered to a low pressure air flow. This is a key technology requirement for development of a fully cooled gas turbine, with potential for operation at radically increased turbine inlet temper ...

SOLID STATE LASER SOURCES CURRENTLY AVAILABLE FOR MEASURING GREENHOUSE GASES, COMBUSTION PRODUCTS, AND OTHER SPECIES ACROSS THE 3 TO 30 MICRON REGION ARE LEAD SALT DIODE LASERS WHICH OPERATE AT LIQUID NITROGEN TEMPERATURES. PRACTICAL PROBLEMS INCLUDE THE NEED FOR CRYOGENIC COOLING, ERRATIC TUNING BEHAVIOR, AND LIMITED AVAILABILITY OF SINGLE MODE DEVICES IN THIS REGION. THE OPPORTUNITY EXISTS TO ...

An atmospheric pressure chemical ionization mass spectrometer (APCIMS) will be designed to optimally measure a variety of gaseous species involved in marine boundary layer chemistry and condensation processes. The design of the instrument will modify prior technology, developed at the Geophysics Directorate of the Air Force Phillips Laboratory, to be included in the payload of a remotely piloted, ...

The problem addressed in this project is the need to monitor oxides of nitrogen(NOx, ie NO and NO2) levels in the combustion gases of stationary sources suchas power plants in order to facilitate on-line control of the scrubbers that willbe used to remove those pollutants. Since the measurements are in the parts permillion range, simpler and less expensive instruments than those currently used,su ...