Award Data

Efforts to apply active noise and vibration control commercially, while intensifying, continue to be hampered by the cost of the computers required to implement the active algorithms. Currently, the cost of wide-band control is prohibitive for lightly damped systems such as precision structures or highly reverberant acoustic spaces, even if the system has just one canceling actuator and one error ...

Presently there are no broadly tenable, narrow linewidth souces that operate throughout the mid-infrared (mid-IR) region of the spectrum, from 1 to 5 microns. Traditional sources have very low spectral brightness (low power per unit spectral bandwidth). This proposal describes a novel approach to produce a source with very high spectral brightness, tunable over the range of 1.1 to 4.3 microns. ...

The high cost of near-to-mid infrared laser sources is problematic for many military applications, such as seekers where sources are short lived. Order-of-magnitude cost reductions are needed for 10-20 watt, 1-micron lasers. The proposed approach to reducing costs involves using novel manufacturing processes to greatly reduce parts count and assembly time, thus reducing cost. When applied to a ...

The Air Force Phillips Laboratory is seeking approaches for demonstrating frequency agile COIL (chemical oxygen iodine lasers) operating near 1.31 microns and at 10 kHz rep rates. Frequency conversion approaches must be capable of handling high average power levels, greater than 10 kWatts. Converting a COIL device to high peak powers will be necessary for frequency conversion. The approach prop ...

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Imaging spectrometers are a powerful new tool for performing hyperspectral measurements for remote sensing, environmental monitoring, and target detection and characterization applications. The major problem associated with hyperspectral measurements now, however, is not the technology for performing the measurements but rather the technology for analyzing and recording the high data rates genera ...

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This program develops and demonstrates an innovative, low cost, solution and non-vacuum based process for deposition of YBCO on continuous, textured metal tape substrates. It is easily scaleable for long lengths of continuous conductors, and is an inherently more cost effective as it is scaled.Recent advances in the deposition of thick YBCO films have demonstrated that fabricating practical, long ...

Low power electrostatic thrusters are greatly penalized by the lack of small efficient cathodes. Conventional hollow cathodes are relatively large and consume power and propellant at a rate approaching that required by the small thruster, thus greatly reducing the overall efficiency and Isp. An attractive alternative to the hollow cathodes (which are thermionic emitters) are field emission array ...

This Phase I proposal is to develop methods to couple a numerical three-dimensional groundwater contaminant fate and transport model with Monte Carlo probabilistic risk assessment methods in order to allow selection of remedial criteria based on reasonable estimates of risk to humans and the environment. The market will be searched for the most effective and available three-dimensional numerical ...