Award Data

An immediate requirement exists for new techniques for efficient non destructive inspection and repair of composite components such as those that will be used in the "composite weapon" that is under development. IDeally, these operations would be undertaken at the field or the depot level itself, and be performed by semi-skilled operators. Therefore, systems that are robuts, inexpensive and accura ...

We propose the exploration of single crystal GaN waveguides for the fabrication of optoelectronic integrated circuits. The feasibility of using GaN for short wavelength (up to 365 nm) OEIC's will be established in Phase I via the demonstration of a channel waveguide based phase shifter. The Al(sub x)GA(sub 1-x)N material system with its transparency from 365 nm to 12 microns, tunable refractive in ...

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Treatment and disposal of surfactant-laden waste waters is a significant problem at firefighter training facilities, as well as in real world use. The extremely high foaming potential and chemical oxygen demand of these waters restricts their discharge into sewage treatment plants. Improved treatment processes must be developed for aqueous firefighting foams, hydrocarbons, and their degradation by ...

PDRI proposes to develop two criterion measures to assess retention and decay of Aerospace Physiology (AP) knowledge and skills. The standard criterion measure for measuring knowledge/skill retention and decay is a Job Knowledge Test (JKT). Therefore we will develop a multiple-choice JKT using expert aassistance from AP training staff. The JKT will measure the foundation of AP knowledge and skills ...

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The proposed project is to develop a novel polarization-sensitive thermal imaging system to detect, track and identify objects in space, in the air or on the ground. By exploiting polarization signatures, the proposed system will achieve enhanced performance relative to other fully passive systems and be able to detect, track and idetify targets even when their thermal contrast is low. In Phase I, ...

Maintenance of Air Force turbine engines is hampered by threaded fasteners which have seized and cannot be removed, particularly in high-temperature turbine sections. Removal of these fasteners for routine maintenance often results in galled, seized or broken parts, with accompanying damage to the mating parts and lost maintenance time. This is very costly to the Air Force. Surfaces Research has d ...

Pseudomorphic InGaAs with high InAs concentrations on GaAs substrates are currently in use in complementary-heterostructure FET (C-HFET) digital and MODFET MMW circuits. While their bandgaps enable them to detect 1300 and 1550 nm light, the projected detection efficiency (responsivity) is very low due to the limited thicknesses sampled by normally incident light. This proposal is to study the feas ...

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