Acoustic porous resonant metamaterials for rotor insulation - Surveillance, Vibrations, Shock and Noise Access content directly
Conference Papers Year : 2023

Acoustic porous resonant metamaterials for rotor insulation

Jules Plisson
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Anas Lachheb
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Thiago Cavalheiro
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Abstract

The objective of our research is to develop a fairing for UAVs and other VTOL (Vertical and Take-Off Landing) aircrafts capable of significantly reduce its noise emissions. In order to achieve this objective, acoustic meta- materials developed at Capgemini Engineering, tested in the context of noise insulation of new workspaces, will be used to create liners specific of these fairings. These reconfigurable metamaterials are designed with a porous matrix printed by the FDM (Fused Deposition Modeling) method in which resonant elements are in- cluded. Different printing configurations are explored, including patterns and fill densities to obtain interesting performances in the targeted frequency ranges. Tests are performed to compare the noise emissions between each acoustic fairing configuration
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Dates and versions

hal-04165943 , version 1 (19-07-2023)

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  • HAL Id : hal-04165943 , version 1

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Jules Plisson, Anas Lachheb, Thiago Cavalheiro. Acoustic porous resonant metamaterials for rotor insulation. Surveillance, Vibrations, Shock and Noise, Institut Supérieur de l'Aéronautique et de l'Espace [ISAE-SUPAERO], Jul 2023, Toulouse, France. ⟨hal-04165943⟩

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