Method of manufacturing a sound absorbing panel

A technology of sound-absorbing panels and compartments, which is applied in the field of manufacturing sound-absorbing panels, which can solve problems such as the performance degradation of sound attenuation devices and the difficulty of integrating sound attenuation devices, and achieve the effect of small acoustic performance and small changes
CN104024104AInactive Publication Date: 2014-09-03AIRCELLE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AIRCELLE
Publication Date
2014-09-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method of manufacturing a sound absorbing panel (107) according to which a reflective wall (112) is added to at least one part of one of the faces (111, 113) of a set of sound absorbing cells. The method according to the invention is remarkable in that at least one passage (118) on one portion of the thickness (E) of said assembly is formed on the face (111, 113) opposite said one of the faces (111, 113), said passage (118) forming at least one main communication channel (119) between the cells and is intended for the circulation of a deicing fluid.
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Description

technical field

[0001] The present invention relates to a method of manufacturing an acoustic panel. The invention also relates to the sound-absorbing panel obtained by said manufacturing method. The invention further relates to a nacelle for an aircraft turbojet engine comprising a sound-absorbing panel obtained by the production method according to the invention. Background technique

[0002] Aircraft turbojet engines produce significant noise pollution. As the turbojet engines used become more and more powerful, there is a strong need to reduce this pollution. The design of the nacelle surrounding the turbojet engine contributes significantly to reducing this noise pollution.

[0003] In order to further improve the acoustics of the aircraft, the nacelle is equipped with sound-absorbing panels, with the aim of reducing the transmission of the noise generated by the turbojet engine.

[0004] Usually, such acoustic panels are installed on the nacelle surrounding the tur...

Claims

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