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SBC: Nastec, Inc. Topic: N10AT037
A unique type of air lubricated thrust bearing called a Wave Bearing is proposed to assist a rolling element bearing to carry the thrust load and to improve the bearing’s life when used in a micro gas turbine engine. The Wave Bearing technology will provide improved reliability, safety and life compared to rolling element bearings used alone, as well as to allow simplification of engine design a ...STTR Phase I 2010 Department of DefenseNavy
SBC: PROGENY SYSTEMS, LLC Topic: N10AT016
Stealth is a primary consideration in design and operation of ships and submarines in the Navy fleet. Noise in hydraulic systems and piping is one source of unwanted noise. A method to measure and monitor this noise is essential to controlling and eliminating these noise sources. With the assistance of UMASS Dartmouth we will present a method to externally measure the fluidborne sound pressure lev ...STTR Phase I 2010 Department of DefenseNavy
SBC: TDA RESEARCH, INC. Topic: N10AT025
Electromagnetic launchers or rail guns are a key component of the Navy’s all-electric ship of the future, but they lack the durability required for repeated firings. TDA Research and the University of Nevada, Reno (UNR) are developing a tough, durable and conductive refractory metal coating that will protect the copper alloy conductors (rails) from the extreme heat and wear conditions inside the ...STTR Phase I 2010 Department of DefenseNavy
Characterization of Diffusive Noise Fields Using Ambient Noise Interferometry, Spatial Gradients and Acoustic Bright SpotsSBC: Rocky Mountain Geophysics, Llc Topic: N10AT004
We propose to conduct a feasibility study for utilizing broadband sampling of the diffusive noise field in a dynamic environment. In ambient noise studies, the ability to resolve a wavefield is proportional to its time-bandwidth (TB) product. In a dynamic environment such as in the atmosphere or ocean, the nature of the impinging wave field is changing rapidly so that only short time segments can ...STTR Phase I 2010 Department of DefenseNavy
SBC: SCIENTIFIC FORMING TECHNOLOGIES CORPORATION Topic: N10AT028
While there are established methods available in determining the fatigue life of critical rotating components, there is still room for improvement for better understanding and prediction of life limiting factors. Improved risk assessment of jet engine disk components would require probabilistic modeling capability of the evolution of microstructural features, residual stresses and material anomali ...STTR Phase I 2010 Department of DefenseNavy
SBC: SMD Corporation Topic: N10AT016
In this project we propose to demonstrate the feasibility of an external pipe sensor for measuring sound pressure levels in submarine piping systems. The sensor consists of flexible PVDF wire wrapped a number of integral turns around the pipe exterior. The charge/voltage output of the sensor can be shown to be directly proportional and highly sensitive to the amplitude of the contained fluid pulsa ...STTR Phase I 2010 Department of DefenseNavy
SBC: Strategic Insight, Ltd. Topic: N10AT018
The research objective is to develop Modeling and Simulation (M&S) tools to accurately predict the performance of new state-of-the-art material systems as protection for high value missiles deployed in their launchers or canisters. The focus is on adapting multi-layered novel and non-traditional material technologies to improve protection against penetration and fragment impacts, focused detonatio ...STTR Phase I 2010 Department of DefenseNavy
SBC: Strategic Insight, Ltd. Topic: N10AT002
The research objective is to develop a fully functional computational method for prediction of the after-burning effect of different fuels in a wide range of temperature, pressure, and turbulence regimes. Achievement of the objective requires understanding and modeling of key phenomena including (a) post-detonation response of the fuels, (b) near-field coupling of detonation products with particul ...STTR Phase I 2010 Department of DefenseNavy
SBC: UES INC Topic: N10AT028
Thermo-mechanical processes of turbine disks have been progressively improved to meet microstructural requirements tailored for advanced, sustainable high temperature performances. However, the chemistry of typical Ni-base turbine disk alloys is very complex, and yields a variety of phases and microstructural anomalies under different thermo-mechanical heat treatments. These microstructural hetero ...STTR Phase I 2010 Department of DefenseNavy
Fracture Evaluation and Design Tool for Welded Aluminum Ship Structures Subjected to Impulsive Dynamic LoadingSBC: Thornton Tomasetti, Inc. Topic: N10AT041
Aluminum as a structural material for naval applications has a number of advantages over steel, owing mainly to significant weight reductions which translate to higher speed and range attainable by aluminum vessels. A comprehensive study of research needs for aluminum structures conducted under the ONR program identified the key research areas, which included material behavior and fracture evaluat ...STTR Phase I 2010 Department of DefenseNavy