The proposed innovation offers significant advantages over aeroacoustic prediction tools currently available in industry. The hybrid LES/RANS and acoustic BEM modeling will provide a unique combination of high-precision multi-physics tools. The proposed approach will offer a great technology advantage through its ability of high-quality predictions and fast simulation turnout. The toolset will be invaluable to launch service providers and payload system and sensitive instrument developers, particularly for one-of-a-kind DoD, NRO, and NOAA satellites. At the end of the SBIR, this technology will be readily available for analysis of micro-jet or other active/passive control systems, conventional and vertical landing jet engine noise, and airframe noise in general.
The Computational Aero-Acoustics (CAA) tool will be of first order importance in defining lift-off environments for Shuttle and new heavy lift launch vehicle designs, and for the analysis of noise suppression techniques such as targeted placement of water deluge systems or shaping of launch platform surfaces and exhaust ports to reduce the noise sources. The developed tool will provide greater confidence to NASA acoustics engineers offering accurate, quantitative acoustic loading predictions from first principle CFD/CAA simulations for specific launch vehicle configurations. The tool will also be invaluable to payload system and instrument developers, particularly for one-of-a-kind and experimental optics and telescope systems.
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