Acoustic porous resonant metamaterials for rotor insulation
Résumé
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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