Invention Grant
US09540094B2 Propeller for an aircraft engine comprising means for reducing noise at middle and high frequencies and improving the acoustic perception
有权
用于飞机发动机的螺旋桨包括用于降低中频和高频噪声并改善声学感知的装置
- Patent Title: Propeller for an aircraft engine comprising means for reducing noise at middle and high frequencies and improving the acoustic perception
- Patent Title (中): 用于飞机发动机的螺旋桨包括用于降低中频和高频噪声并改善声学感知的装置
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Application No.: US13894076Application Date: 2013-05-14
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Publication No.: US09540094B2Publication Date: 2017-01-10
- Inventor: Camil Negulescu , Magdi Omais
- Applicant: Airbus Operations (SAS)
- Applicant Address: FR Toulouse
- Assignee: AIBUS OPERATIONS (SAS)
- Current Assignee: AIBUS OPERATIONS (SAS)
- Current Assignee Address: FR Toulouse
- Agency: Greer, Burns & Crain, Ltd.
- Priority: FR1254490 20120516
- Main IPC: B64C11/18
- IPC: B64C11/18 ; B64C11/48 ; B64D27/00
Abstract:
Enriching and balancing the acoustic spectrum radiated by a propeller by introducing a differential pitch angle on certain blades of the propeller. Modifying the acoustic spectrum makes it possible to render the propeller noise more pleasant to the human ear.
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