Acoustic panel for aircraft nacelle, and method of manufacturing the acoustic panel

A method of manufacturing an acoustic panel for an aircraft nacelle, comprising,

• applying a facesheet to the surface of a mold;
• fixing a first surface of a cellular layer configured to trap noise to the facesheet;
• fixing a backplate to a second surface of the cellular layer which is the opposite surface to the first surface;
• wherein the step of applying a facesheet to the surface of a mold includes applying a layer of preimpregnated woven material containing weft yarns spaced apart from one another and warp yarns spaced apart from one another, so as to form openings between the yarns, the weft yarns having a mutual spacing of between 0.3 mm and 1.5 mm, and the warp yarns having a mutual spacing of between 0.3 mm and 1.5 mm.

An aircraft nacelle comprising:

• an acoustic panel, a cellular layer, the cellular layer being delimited by a first surface and by an opposite second surface;
• a facesheet fixed to the first surface of the cellular layer;
• a backplate fixed to the second surface of the cellular layer;
• wherein the facesheet comprises a layer of a preimpregnated woven material containing weft yarns spaced apart from one another and warp yarns spaced apart from one another, so that the facesheet exhibits openings between the yarns, the weft yarns having a mutual spacing of between 0.3 mm and 1.5 mm, and the warp yarns having a mutual spacing of between 0.3 mm and 1.5 mm.