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External Acoustic Liners for Multi-Functional Aircraft Noise ReductionAcoustic liners for aircraft noise reduction include one or more chambers that are configured to provide a pressure-release surface such that the engine noise generation process is inhibited and/or absorb sound by converting the sound into heat energy. The size and shape of the chambers can be selected to inhibit the noise generation process and/or absorb sound at selected frequencies.
Document ID
20170004331
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Jones, Michael G.
Thomas, Russell H.
Nark, Douglas M.
Howerton, Brian M.
Czech, Michael J.
Date Acquired
May 2, 2017
Publication Date
April 18, 2017
Subject Category
Acoustics
Report/Patent Number
Patent Application Number: US-Patent-Appl-SN-13/417,351
Patent Number: US-Patent-9,623,952
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-9,623,952
Patent Application
US-Patent-Appl-SN-13/417,351

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