Naval Undersea Warfare Center Detachment, New London Commercial Acquisition Department, Code 09, Building 39, New London, CT 06320-5594

A -- CENTERWIDE BAA PART 4 OF 6 SOL BAA 95-02D DUE 063096 POC Contact R. Nielsen (203) 440-4341 Contracting Officer E. Cannata at (203) 440-6516 SOL BAA 95-02D. See Section 95-02F (Part 6) for submittal instructions. This BAA announcement consist of sections 95-02A-F. 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 modeling -- shallow water; blue water; low, sonar, weapon, high, and very high frequency; wake physics -- acoustic 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 batteries -- metal 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 NUWC'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; THERMAL AND ELECTRIC PROPULSION (FOR TORPEDO, TARGET, UUV, COUNTERMEASURE APPLICATIONS High energy fuels and oxidants for internal combustion engines and gas turbines for use in torpedoes 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 for high and low rate applications are also desired; Analytical models to perform in-depth optimization analyses on torpedo electric propulsion systems, including secondary and primary high energy density battery systems together with permanent magnet, brushless, DC motors; 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 electric current densities of both torpedo 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; Integrated propulsion/motor combinations; 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); Studies and assessments of advanced torpedo and UUV propulsion system production and life cycle costs; MATERIALS Engineered coatings; Cost engineering in composite manufacturing; High strength, lightweight, low-cost, flame-resistant, non-metallic materials; 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, archectures 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 (0194)

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