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Shipboard structures employing composites typically use glass/vinyl ester (VE) manufactured with vacuum assisted RTM. This composite system offers reduced weight, no corrosion and improved signature performance but lacks the fire performance characteristics required for shipboard use. Phenolic resins (PH) provide outstanding fire performance but are difficult to process and offer lower structur ...

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Ultrafiltration membranes offer great potential for compact, low cost clean-up of Navy surface ship graywater and blackwater. A major limitation of these ultrafiltration membranes is significant loss in flux with time associated with membrane fouling from proteins, polysaccharides, and other waste products. Backflushing can only be used to a limited extent. Chemical treatments are undesirous si ...

Lean burn spark engines are a promising technique to further reduce both NOx and hydrocarbon/carbon monoxide (HC/CO) engine emissions. Higher lean burn levels improve HC/CO oxidation while simultaneously reducing NOx formation. The NOx reduction is due to cooler flame temperatures. While the lean burn limit (beyond which combustion is poor) restricts further emission reductions, the use of oxyg ...

Elsicon Incorporated proposes to develop an optical demultiplexer appropriate for use in high bandwidth fiber-optic communication systems. The demultiplexer will be capable of reducing an optical input bit stream with an aggregate bit rate of greater than 100 Gbits/sec down to a 1 Gbit/sec baseband rate. Therefore, by distributing the full serial data stream among an array of these devices, ultrah ...

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Thermal control of a space satellite in orbit is usually accomplished by balancing the energy emitted by the satellite as infrared radiation against the energy dissipated by internal electrical (and other) sources plus energy absorbed from the environment. Due to changing conditions as the satellite orbits there is strong need for a simple thermal control surface operable with low electric power. ...

The proposed process will provide the capability to deposit metal coatings onto heat sensitive composite substrates. The process eliminates problems associated with thermal spray technologies, including oxidation, contamination and overheating of the coating and substrate materials. This process enables dense, adherent coatings to be applied to low temperature composite materials for wear, corrosi ...

S&K Electronics (SKE) proposes a fault-tolerant, parallel distributed processing (FTPDP) system capable of implementing a variety of neural network paradigms for system identification and control applications. The proposed FTPDP system offers a scalable and modular hardware architecture that interconnects small, low-cost neural processors with fault-tolerant high-speed serial buses. The neural p ...

A Phase I research program is proposed with two primary technical objectives that are critical to the development of real optical memory devices based on solid state materials. The first objective will be to characterize striae in optical memory materials and subsequently grow improved reduced striae crystals. Striae is currently limiting the performance of technololgies based on the ...