Control of and Energy Harvesting from Thermal and Vibration Loads due to High Temperature, High Speed Impinging Jets Navy SBIR FY2010.1 Sol No.: Navy SBIR FY2010.1 Topic No.: N101-093 Topic Title: Control of and Energy Harvesting from Thermal and Vibration Loads due to High Temperature, High Speed Impinging Jets Proposal No.: N101-093-0526 Firm: Combustion Research and Flow Technology, Inc. 6210 Kellers Church Road Pipersville, Pennsylvania 18947-1020 Contact: Neeraj Sinha Phone: (215) 766-1520 Web Site: www.craft-tech.com Abstract: CRAFT Tech and the research group at the Advanced Aero-Propulsion Laboratory of Florida State University have worked on the jet noise problem and its control for nearly a decade in highly interdisciplinary teams. Leveraging our considerable expertise, facilities that were specifically designed for the type of research proposed here and our highly interdisciplinary research team, a multi-pronged approach is proposed that steps past the limitation of noise control via modification to the nozzle by taking a different approach to control of thermal and vibration loads attenuation for VTOL and/or JBD operations of the JSF F-35B by directing attention towards the modifications to the impingement plane. Specifically, the use of "smart" multi-functional structural materials, including piezoelectric, magneto-resistive and thermoelectric, will be computationally and experimentally investigated for providing vibration/noise control AND for harvesting energy from the unsteady pressure and thermal fields on the impingement plane. Key elements of the proposed research include the following: (a) Control of the Impinging Jet Flow-Noise-Vibration using Active-Adaptive Methods (b) Development & Application of Validated LES and Computational Aeroacoustics (CAA) Tools (c) Development of Piezoelectric Structures for Energy Harvesting and Noise/Vibration Attenuation and (d) Development of Thermoelectric Generators for Energy Harvesting from Thermal Gradients. Benefits: The jet noise modeling/attenuation technology is of direct relevance to the ongoing JSF acquisition. The technology development proposed is of direct relevance to our noise reduction activities in commercial aviation, as well as to both IR and noise reduction for military aircraft. This provides additional commercialization opportunities since future combat air vehicles have placed a premium on stealth and low-observables (LO). The methodologies developed in this SBIR program will also be applicable to noise reduction and energy absorption from walls on engine rooms in commercial ships. The energy harvesting technology developed will have a wide range of commercial applications in areas where vibrations and thermal loading are present. Return