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ACOUSTIC ATTENUATION PANEL FOR AN AIRCRAFT PROPULSION UNIT AND PROPULSION UNIT COMPRISING SUCH A PANEL
ACOUSTIC ATTENUATION PANEL FOR AN AIRCRAFT PROPULSION UNIT AND PROPULSION UNIT COMPRISING SUCH A PANEL
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机译:飞机推进装置的声学衰减板和包括这种板的推进装置
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摘要
An acoustic attenuation panel for a propulsion unit including a nacelle and a turbojet engine includes a cellular core disposed between an inner skin and an outer skin, called acoustic skin, the acoustic skin including a plurality of acoustic apertures, the acoustic apertures being inclined, at a non-zero inclination angle (β) relative to the direction normal to the acoustic skin, upstream with respect to the flow direction of the air or gas flow to which the panel is intended to be subjected under normal operating conditions, that is to say upstream of the propulsion unit when the panel is mounted in such a unit.
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