| 发明名称 |
Acoustic panel liner for an engine nacelle |
| 摘要 |
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. |
| 申请公布号 |
US9334059(B1) |
申请公布日期 |
2016.05.10 |
| 申请号 |
US201414297131 |
申请日期 |
2014.06.05 |
| 申请人 |
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration |
发明人 |
Jones Michael G.;Nark Douglas M.;Ayle Earl;Ichihashi Fumitaka |
| 分类号 |
B64D33/02;F02C7/045 |
主分类号 |
B64D33/02 |
| 代理机构 |
|
代理人 |
Warmbier Andrea Z. |
| 主权项 |
1. An acoustic panel liner, the acoustic panel liner comprising:
a face sheet; a back plate configured to attach to an internal surface; and a liner core disposed between the face sheet and the back plate, said liner core comprising:
a first and second elongated chamber extending between said face sheet and said back plate, anda first and second septum, wherein said first septum has a first DC flow resistance and is disposed within said first elongated chamber at a first insertion depth, and said second septum has a second DC flow resistance and is disposed within said second elongated chamber at a second insertion depth, wherein said first DC flow resistance is from about 40 to about 1,200 MKS Rayls and said second DC flow resistance is at least about 2,000 MKS Rayls. |
| 地址 |
Washington DC US |
