Acoustic panel for an ejector nozzle

Details Acoustic panel for an ejector nozzle Acoustic panel for an ejector nozzle

G - Physics

10

K

G10K 11/168 (2006.01)

Patent

CA 2726463

The invention relates to an acoustic panel (20) for an ejector nozzle (10) comprising the following main components: an external skin (22) containing acoustic holes (29); an internal skin (23); an acoustic structure (21) comprising alveolar-core cells (27) between the internal skin (23) and the external skin (22). At least one main component selected from the external skin (22), the internal skin (23) and the acoustic structure (21) is formed by a composite material and the acoustic structure (21) is held in contact with either or both of the internal (23) and external (22) skins by compression by elastic means and/or by fixing by mechanical fixing means (24). The invention also relates to an injector nozzle (10) and a nacelle (1) comprising such an acoustic panel (20).

L'invention se rapporte à un panneau acoustique (20) pour une tuyère d'éjection (10) comprenant les éléments principaux suivants: - une peau externe (22) présentant des trous acoustiques (29), - une peau interne (23), - une structure acoustique (21) comprenant des cellules à âme alvéolaire (27) et disposée entre la peau interne (23) et la peau externe (22). Au moins un élément principal choisi parmi la peau externe (22), la peau interne (23) et la structure acoustique (21) est formé par un matériau composite et la structure acoustique (21) est maintenue en contact sur au moins une des peaux interne (23) et externe (22) par compression à l'aide de moyens élastiques et/ou par fixation à l'aide de moyens mécaniques de fixation (24). L'invention se rapporte également à une tuyère d'injection (10) et une nacelle (1) comportant un tel panneau acoustique (20).

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