发明名称 |
AN ACOUSTIC LINER |
摘要 |
An acoustic liner comprising a sound permeable inside plate forming a first closed annulus, and a sound impermeable outside plate forming a second closed annulus located outside of and extending around the first closed annulus. The inside and outside plates are spaced apart and thus form an annular chamber therebetween; and a core member is secured in this annular chamber, between the inside and outside plates. The core member forms or has the shape of a sine wave form annularly extending around the inside plate, and the core member and the inside plate form a multitude of varying depth sound absorption chambers to attenuate sound waves over a broad band of frequencies. |
申请公布号 |
WO9101034(A2) |
申请公布日期 |
1991.01.24 |
申请号 |
WO1990US03538 |
申请日期 |
1990.06.21 |
申请人 |
GRUMMAN AEROSPACE CORPORATION |
发明人 |
ARCAS, NOE;PARENTE, CHARLES, A. |
分类号 |
F02C7/045;B64C1/40;F02K1/82;F02K3/00;G10K11/16;G10K11/172 |
主分类号 |
F02C7/045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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