Commercial Acquisition Department, Bldg. 11, Naval Undersea Warfare Center Division, Newport, Code 59, Simonpietri Dr., Newport, RI 02841-1708

A -- CENTERWIDE BAA PART 4 OF 6 SOL BAA 96-01D DUE 063097 POC Contact Gerard Palmer, (401) 841-2442 X292 FAX: (401) 841- 4820 SOL BAA 96-01D. TORPEDO AND ACOUSTIC COUNTERMEASURES / COUNTERMEASURES DEVICES TECHNOLOGY Technology supporting mobile and stationary surface and submarine launched jammers and countermeasures (CMs) capable of operating in layered defense scenarios and in open ocean and/or littoral environments. Improved countermeasure systems, transmit waveforms, beam patterns, sound pressure levels, endurance, in-situ design, and classification ''smart'' adaptive processing. Passive/active signal processing techniques for countermeasure application especially the following technologies: wavelet theory, time frequency distributions, full spectrum processing, transients, digital signal processing, parameter/feature extraction, neural networks, curve fitting routines, clustering algorithms, fuzzy logic, field programmable gate arrays (FPGA), application specific integrated circuits (ASIC), ''smart adaptive'' processing, and active signal processing for detection, classification, and localization (DCL). Ocean physics simulation and analysis including: broad band environmental acoustic modelingshallow water; blue water; low, sonar, weapon, high, and very high frequency; wake physicsacoustic properties of wakes; nonacoustics, i.e., electromagnetic, laser. Small affordable broadband high efficiency, high power, high fidelity acoustic sensors, transducers, and arrays especially the following technologies: split ring, barrel stave flextensional, flextensional, rare earth materials, piezoelectric materials, plasma, piezo rubber, and/or fiber optic hydrophones, wideband arrays, planar arrays, and lead, magnesium, niobate material. Undersea material technology: small expendable high energy primary batteriesmetal hydrides, polymer, and lithium ions. CM system engineering including packaging, versa module European (VME) extension instrumentation (VXI), simulation based design tools, commonalty, modular, rapid prototyping, and CM device operation in multiple device environment. Computer-based warfare modeling, simulation, and analysis including synthetic environments, analysis methodologies using advanced processing techniques and integration to NUWCDIVNPT's various simulation bed facilities. To specifically include engagement modeling; a CM test bed providing for CM signal design and assessment,CM logic design, real-time algorithm development, and on-line threat database; distributed interactive simulation (DIS) networks to integrate to major weapons analysis facilities; advanced displays; and software development tools to support state-of-the-art CM development. Dual-use (sonar and torpedo) countermeasure that fits in existing launchers. THERMAL AND ELECTRIC PROPULSION (FOR TORPEDO, TARGET, UUV, MOBILE MINE AND COUNTERMEASURE APPLICATIONS) High energy fuels and oxidants for internal and external combustion engines, hot gas expander engines, and gas turbines for use in torpedoes, targets, mobile mines, and unmanned undersea vehicles (UUVs). Emphasis is on propellants and combustion products that have minimal safety restrictions, personnel hazards, and environmental impact as well as low overall system life cycle costs. Battery, semi-fuel cell, and fuel cell technology including a) high rate primary and secondary batteries for high-speed underwater vehicles and b) low rate rechargeable energy systems for long endurance missions in unmanned underwater vehicles (UUVs). Systems should be energy and power dense, safe, free of environmental impacts throughout the cycle from production to disposal, and have reduced life cycle costs. Rapidly rechargeable secondary systems and smart chargers for high and low rate applications are also desired. Analytical models to perform in-depth optimization analyses on electric propulsion systems, including secondary and primary high energy density battery systems together with permanent magnet, brushless, DC motors, and on thermal propulsion systems, including fuels, oxidizers, combustion systems, thermal engines, and heat exchangers Analytical models to evaluate the transient behavior of aluminum aqueous battery and semi-fuel cell systems applicable to high energy density torpedo and/or UUV applications. Studies and assessments of primary and rechargeable battery systems regarding, but not limited to, the energy and power density, cycle life, affordability, and safety as appropriate to torpedo, target, mobile mine, countermeasure, and UUV systems. Electric motors and controllers for undersea systems including main propulsion, auxiliary thrusters, and other functions. Systems should be compact, lightweight, efficient, low cost throughout their life cycle, and have very low torque ripple and structural vibrations. (The power ranges of interest are 10-40 hp and 100-500 hp.) Novel propulsion concepts, including hybrid power cycles Integrated motor/propulsor combinations, and quiet, efficient flooded motor concepts Flow of conducting fluids in the presence of strong electric and/or magnetic fields. Effects of electrolytic bubbles, chemical reactions, and electromagnetic forces should be considered either theoretically and/or experimentally. Applications include flow in aqueous battery systems, magnetohydrodynamic propulsion, and electromagnetic flow control. Studies and assessments of propulsion system technology on the performance of tactical scale undersea vehicles (torpedoes, targets, UUVs, and countermeasures). Micro electro magnetic system (MEMS) devices for energy conversion and micro-sensor and controller applications. High-strength, rare earth permanent magnet materials and fabrication processes. Studies and assessments of advanced torpedo, target, mobile mine, and UUV propulsion system production and life cycle costs. Novel high- power (10-50 hp) propulsion concepts for small diameter ( 12'') UUVs. MATERIALS Engineered coatings. Cost engineering in composite manufacturing. High-strength, lightweight, low-cost, flame-resistant, non-metallic materials. High-strength, rare earth permanent magnet materials and fabrication processes. Lightweight, nonferrous, shielding of electromagnetic energy. Multisignature materials (e.g., radar and infrared low observable materials). See materials requirements listed in other technological areas. COGNITIVE NEUROSCIENCE (CNS) RESEARCH AS APPLIED TO UNDERWATER SYSTEMS Applications to state-of-the-art underwater systems involving: Sonar detection and classification of diverse targets. Autonomous guidance and control. Autonomous perception, data fusion, analysis and decision making. Applications from on-going research in: Biologically-based auditory systems. Architectures involving autonomous agents. Improved computational models based on biologically accurate neurons. The implication of neuronal microtubules in perceptive systems. HUMAN PERFORMANCE Adaptation and responses of individuals and groups to living in stressful environmental conditions. Stressful environmental conditions include confined spaces; altered atmospheric composition; hypo- and hyperbaric exposures; changing work, diet, or exercise schedules; noise; light; vibration; temperature extremes; etc. Adaptations and responses include biochemical, metabolic, physiological, psychological, circadian, and physical and mental performance. Medical treatment, diagnosis, and modeling of decompression sickness following diving and sojourns to a hypobaric environment. END of Part 4 of 6 (0179)

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