公开(公告)号：US20210078717A1

公开(公告)日：2021-03-18

申请号：US17017429

申请日：2020-09-10

Applicant: Airbus Operations SAS

Inventor： Alain PORTE ,  Jacques LALANE ,  Benoit PRZYBYLA ,  Thierry COLCOMBET ,  Franck COLCOMBET

IPC: B64D33/02 ,  F02C7/045

Abstract: An acoustic panel for an aircraft nacelle air intake comprising a resistive skin perforated by noise absorption holes and a core against which the resistive skin extends, wherein the resistive skin has a smooth visible face and a castellated rear face with alternating ribs and grooves. The noise absorption holes are formed exclusively in the grooves, i.e., in a zone where the skin is less thick, which enables the holes to have a diameter that is both greater than the thickness of the skin and small enough not to have any impact on drag. The mechanical strength of the resistive skin provided by the ribs ensures that the lesser thickness of the resistive skin in the grooves does not render the resistive skin overly flexible.