ACOUSTIC TREATMENT PANEL HAVING SCALABLE THICKNESS

摘要

The invention relates to an aircraft nacelle comprising an air inlet (110) with a lip (114) extended to the back by a passage (116) that makes it possible to channel an air flow to a drive (112), said passage (116) comprising at least one acoustic treatment panel (120) that includes, from the outside to the inside: an acoustically resistant porous layer (122); at least one cell-like structure (124), the cells of which are sized for acoustic treatment; and a reflective or sealed layer (126). Said reflective layer (126) comprises, near the end thereof that is oriented toward the lip (114), a surface (130) that is angled so as to be connected to the lip (144). A cell-like structure (136) is in contact with the angled surface (130) of the reflective layer, and the angled surface (130) forms an angle less than 30° with the tangent on the acoustically resistant layer. Said aircraft nacelle is characterized in that the cell-like structure (136) is inserted between said angled surface (130) of the reflective layer and an acoustically resistant porous layer. Said aircraft nacelle is also characterized in that the cells of the cell-like structure (136) are sized for acoustic treatment.