What is it about?
It is thought that owls fly very quietly in part due to the porosity of their wing. Inspired by this feature, we use porosity/perforations on flat plates in an acoustic wind tunnel to reduce a specific kind of flow noise related to the thickness of the plates.
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This page is a summary of: Experimental Study of Trailing-Edge Bluntness Noise Reduction by Porous Plates, AIAA Journal, August 2024, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.j064045.
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