Award Data

We propose to develop a general purpose computer code for calculating the scattering from antennas on an aircraft, which is described by a CAD file. The scattering contribution will include both the passive structure mode and active irradiation mode, calculcated by a hybrid of a high-frequency ray technique and a rigorous finite element technique. The proposed code will be made compatible with the ...

Computational algorithms and codes will be tailored specifically to the Air Force's needs in groundwater flow and pollutant transport as required in Environmental Engineering. The project will build heavily on previous and ongoing Ecodynamics work for Sandia Laboratories on the Waste Isolation Pilot Plant (WIPP) project and on proposed work for the U.S. Army Waterways Experiment Station. Robust, e ...

RESEARCH WILL BE CONDUCTED BY HICHEM CORPORATION, TO DEVELOP A NEW TECHNOLOGY FOR PYROLYSIS OF SCRAP TIRES. DISPOSAL OF USED TIRES IS A BIG PROBLEM IN THE WORLD, ESPECIALLY USA, SINCE MORE THAN 2.5 MILLION TIRES ARE DISCARDED EACH YEAR. MOST OF THESE TIRES ARE DISPOSED IN LANDFILLS. PYROLYSIS OF SCRAP TIRES HELPS TO RECOVER AND REUSE MOST OF THE VALUABLE CHEMICAL AVAILABLE IN TIRES. PYROLYSIS OF S ...

Several dye-doped polymer waveguides are selected based on a new integrated infrared to visible upconversion scheme. Visible upconversion particularly at blue, green and red wavelengths will be searched in these materials. Thin films of these materials will be spin coated and a simple laser polymerization process will be used to fabricate waveguides with low linear optical loss. Nonlinear optical ...

The ability to display critical information within the optical train of a night vision device has become a requirement in the aviation community. The current display approaches rely on CRT's, optical combiners, lenses, and fiber optic cable to inject the symbology within the optical train of the night vision device. Besides decreased image tube life, bulkiness, and additional weight, the performan ...

Cubane C8H8 is potentially an extremely valuable fuel substitute for the kerosene-based rocket propellant RP-1. The classical Eaton synthesis to yield cubane 1,4-dicarboxylic acid in five steps involves a key photochemical reaction. The steps before and after the critical 2+2 cycloaddition are standardized and readily scalable. However, this steps alone prevents scale-up. We will develop a non-pho ...

Development of high power microwave (HPM) sources for Air Force applications requires cathodes with long usable lifetimes, negligible anode-cathode (A-K) gap closure, reproducible functioning under high repetition pulsing, uniform current density, and negligible plasma/current production from nearby surfaces. Cathodes must maintain such stable electron beam output characteristics for > 1 nsec. We ...

ABSTRACT:For GPS denied navigation, there is a need for developing inertial measurement units (IMU), employing gyroscopes and accelerometers, with better accuracy and/or smaller volume and weight than the state of the art.Under Phase I, we have established the feasibility of realizing a superluminal ring laser gyroscope (SRLG) and a superluminal ring laser accelerometer (SRLA), based on diode-pump ...

ABSTRACT: The Air Force is facing severe budget cuts which force the need to cut operating costs of aircraft and manpower. One way to do this is to increase reliability of systems and components which would reduce maintenance and increase operational availability, which reduces the number of aircraft needed to complete missions. The Air Force desires a new prognostic health management (PHM) appro ...

ABSTRACT:Aviation near volcanic plumes is dangerous because aircraft engines can be damaged if they ingest airborne ash and aerosols.Knowing the forecast location of an ash plume will improve aviation safety while reducing engine maintenance costs.Ash forecast models are immature.To improve their accuracy we have conducted research with volcanologists at the University of Alaska Fairbanks (UAF) re ...