Award Data

Exposure to light at critical phases of the circadian cycle is the main stimulus that entrains circadian rhythms.  Previous work has concluded that exposure of humans to bright light for an hour or more at the right phase of the circadian cycle produces significant phase shifts of circadian rhythms speeding recovery from jet-lag, and optimizing cognitive functionality and restorative sleep.  Our ...

This proposal is concerned with the development of a novel failure initiation and progressive failure analysis (PFA) modeling method for advanced composite structures. The laminate is modeled as a collection of degrading lamina within the framework of lamination theory and executed using user defined subroutines through a commercial finite element software package. In the proposed approach, design ...

The Nanoparticle Field Extraction Thruster (NanoFET) is being developed as a high thrust-to-power, highly compact, variable specific impulse electric propulsion device especially for micro-satellite applications. NanoFET provides thrust by extracting and charging nanometer to micron-sized conducting particles (e.g., spheres) fed from a dry reservoir and accelerating them electrostatically. This te ...

The objective of this program is to build upon many decades of experience with magnetic flowmeters to develop a next-generation system to measure the burning surface admittance of high-energy-density solid propellants at high frequencies and pressures. Using the results of research on solid propellant rocket motor combustion instability from the past fifty years, one can directly measure the acou ...

High performance reconfigurable computing (HPRC) is an expanding technology offering workstations and small clusters performance levels previously reserved for large-scale systems populating the Supercomputing 500 list. However, the lack of open-source libraries of generically applicable numeric methods (i.e. BLAS, LAPACK, Numeric Recipes, etc.) optimized for FPGA embodiment has hindered adoption ...

In phase II we will develop a prototype high power time domain terahertz (TD-THz) pulse source with a 1 milliwatt average output based on our Phase I approach.    This source will be compatible with conventional time domain terahertz spectroscopy and imaging instrumentation, but extend the output power greater than a 1000 times the 1 microwatt typically generated by conventional systems.  TD-T ...

Successful completion of the proposed Phase I work outlined and follow-on Phase II work will provide a system to rank existing materials and coatings for severe wear applications. In addition, the ranking system can be utilized to identify desirable properties in new materials and/or coatings that could be developed for specific severe wear applications. The validated system resulting from the Ph ...

ABSTRACT: This proposal is concerned with the development of a novel failure initiation and progressive failure analysis modeling method for advanced composite structures, including the analysis of selected structural joints utilizing a statistically based micromechanics model embedded in a 3D non-linear finite element code. The method accounts for the interaction between out-of-plane failure and ...

Could the future military use of UAV create a revolution in military affairs as great as the introduction of the airplane or the tank? Is the revolution underway now? If so, how can we best prepare our military for success? The advent of Unmanned Aerial Vehicles (UAV) is once more changing present and future aerial warfare. The configuration, deployment, and face of the United States Air Force ...

The objective of this program is to build upon many decades of experience with magnetic flowmeters to develop a next-generation system to measure the burning surface admittance of high-energy-density solid propellants at high frequencies and pressures. Using the results of research on solid propellant rocket motor combustion instability from the past fifty years, one can directly measure the ac ...