发明申请
- 专利标题: THERMAL-ACOUSTIC SECTIONS FOR AN AIRCRAFT
- 专利标题(中): 飞机的热声部分
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申请号: US14096833申请日: 2013-12-04
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公开(公告)号: US20140216845A1公开(公告)日: 2014-08-07
- 发明人: Tongan Wang , John Maxon , Andrew Foose , David Charles Hornick , Josef Fila
- 申请人: GULFSTREAM AEROSPACE CORPORATION
- 申请人地址: US GA SAVANNAH
- 专利权人: GULFSTREAM AEROSPACE CORPORATION
- 当前专利权人: GULFSTREAM AEROSPACE CORPORATION
- 当前专利权人地址: US GA SAVANNAH
- 主分类号: B64C1/40
- IPC分类号: B64C1/40
摘要:
Embodiments of thermal-acoustic sections for an aircraft for reducing noise along an acoustic path produced from an acoustic source are provided herein. The thermal-acoustic section comprises a first porous layer having a first characteristic acoustic impedance. A second porous layer is disposed adjacent to the first porous layer and has a second characteristic acoustic impedance that is greater than the first characteristic acoustic impedance. The thermal-acoustic section is configured to be positioned along the acoustic path such that at least a portion of the noise from the acoustic source is directed through the first porous layer to the second porous layer to promote absorption of the noise.
公开/授权文献
- US09038774B2 Thermal-acoustic sections for an aircraft 公开/授权日:2015-05-26