公开(公告)号：US11649062B2

公开(公告)日：2023-05-16

申请号：US16654119

申请日：2019-10-16

Applicant: Airbus Operations SAS

Inventor： Alain Porte ,  Jacques Lalane ,  Julien Sentier

IPC: B64D33/02 ,  B64D29/06

CPC classification number: B64D33/02 ,  B64D29/06 ,  B64D2033/0206

Abstract: A forward part of an aircraft propulsion unit nacelle, comprising an air intake lip, an acoustic panel, and a rigid connection between the acoustic panel and the air intake lip. The acoustic panel has a resistive surface and a back skin, and the rigid connection is formed between the air intake lip and the back skin of the acoustic panel to form a propagation path for forces between the air intake lip and the back skin. This configuration gives freedom from design constraints, which enables an increase in the acoustic treatment region toward the front of the nacelle. An aircraft propulsion unit comprising a nacelle having such a forward part is also provided.