Sound attenuation apparatus and method
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United States of America Patent
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Sep 26, 2017
Grant Date -
Jan 26, 2017
app pub date -
Jul 21, 2015
filing date -
Jul 21, 2015
priority date (Note) -
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Abstract
An aircraft engine sound attenuation apparatus includes a perforated face member, a backing member, a plurality of connecting members coupling the perforated face member to the backing member to form a plurality of channels spanning from the perforated face member to the backing member, and a bulk absorber disposed in each of the plurality of channels, wherein the plurality of channels are connected to an interior portion of an aircraft engine nacelle component so that the plurality of channels are oriented in a direction substantially normal to a direction of fluid flow pressure drop passing through the aircraft engine.
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