Invention Grant
- Patent Title: Acoustic panel liner for an engine nacelle
- Patent Title (中): 发动机机舱的隔音板
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Application No.: US14297131Application Date: 2014-06-05
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Publication No.: US09334059B1Publication Date: 2016-05-10
- Inventor: Michael G. Jones , Douglas M. Nark , Earl Ayle , Fumitaka Ichihashi
- Applicant: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Current Assignee Address: US DC Washington
- Agent Andrea Z. Warmbier
- Main IPC: B64D33/02
- IPC: B64D33/02 ; F02C7/045
Abstract:
An acoustic panel liner includes a face sheet, back plate, and liner core positioned therebetween, which may be used in an engine nacelle. Elongated chambers contain variable amounts of septa at a calibrated depth or depths. The septa may have varying DC flow resistance. The chambers may have a hexagonal or other polygonal cross sections. The septa, such as mesh caps, may be bonded to an inner wall of a corresponding chamber. The insertion depths may be the same or different. If different, the pattern of distribution of the depths may be randomized.
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