Acoustically enhanced landing pad for ground-effect noise suppression
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United States of America
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Mar 26, 2024
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app pub date -
Mar 22, 2023
filing date -
Mar 22, 2023
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Abstract
The invention discloses a system for reducing ambient noise generated from an acoustic domain, comprising a landing pad comprising a plurality of zones of varied porosity levels over specified sections, and a plurality of perforated channels across the plurality of zones of varied porosity levels, the perforated channels comprising a plurality of aqueous sheets placed at an inlet of the perforated channels and along the perforated channels. Also disclosed is a method of reducing ambient acoustic noise produced by unmanned aerial vehicle (UAV) operations, the method comprising the steps of absorbing acoustic energy produced by the UAV via a plurality of zones of varied porosity levels, present in a UAV landing pad, resulting in reducing sound-pressure transmission-loss of propeller downwash across the plurality of zones of varied porosity.
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