Acoustic response modeling of energetics systems in confined spaces

David R. González; Ray Hixon; William W. Liou; Matthew Sanford

doi:10.1117/12.719256

10 May 2007 Acoustic response modeling of energetics systems in confined spaces

David R. González, Ray Hixon, William W. Liou, Matthew Sanford

Proceedings Volume 6564, Modeling and Simulation for Military Operations II; 65640P (2007) https://doi.org/10.1117/12.719256
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

In recent times, warfighting has been taking place not in far-removed areas but within urban environments. As a consequence, the modern warfighter must adapt. Currently, an effort is underway to develop shoulder-mounted rocket launcher rounds suitable with reduced acoustic signatures for use in such environments. Of prime importance is to ensure that these acoustic levels, generated by propellant burning, reflections from enclosures, etc., are at tolerable levels without requiring excessive hearing protection. Presented below is a proof-of-concept approach aimed at developing a computational tool to aid in the design process. Unsteady, perfectly-expanded-jet simulations at two different Mach numbers and one at an elevated temperature ratio were conducted using an existing computational aeroacoustics code. From the solutions, sound pressure levels and frequency spectra were then obtained. The results were compared to sound pressure levels collected from a live-fire test of the weapon. Lastly, an outline of work that is to continue and be completed in the near future will be presented.

Citation Download Citation

David R. González, Ray Hixon, William W. Liou, and Matthew Sanford "Acoustic response modeling of energetics systems in confined spaces", Proc. SPIE 6564, Modeling and Simulation for Military Operations II, 65640P (10 May 2007); https://doi.org/10.1117/12.719256

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