公开(公告)号：US20210017935A1

公开(公告)日：2021-01-21

申请号：US16926973

申请日：2020-07-13

Applicant: Airbus Operations SAS

Inventor： Laurent CAZEAUX ,  Antoine BOUDOU

IPC: F02K1/72 ,  F02K1/76 ,  F02K3/04

Abstract: A turbofan having a nacelle comprising a slider being mobile in translation between an advanced position and a retracted position to open a window between a duct and the exterior, a plurality of blades, each one being mobile in rotation on the slider between a stowed position and a deployed position, and a maneuvering system that moves each blade. The maneuvering system comprises, for each blade, a shaft being mobile in rotation on the slider and on which the blade is fixed, a toothed sector being fixed to the shaft, a toothed arc being mobile in rotation on the slider, and having a bearing face, a threaded rod mounted fixed on the fixed structure, a cam having a tapped hole screwed onto the threaded rod and mounted fixed in translation with respect to the slider, and a return arrangement that presses the bearing face against the cam outer surface.

公开(公告)号：US20200164998A1

公开(公告)日：2020-05-28

申请号：US16695375

申请日：2019-11-26

Applicant: Airbus Operations SAS

Inventor： Claire MAFFRE ,  Jérôme GAILLARDO ,  Lionel CZAPLA ,  Florian RAVISE ,  Laurent CALIMAN ,  Laurent CAZEAUX ,  Antoine COUSIN ,  Denis BROSSARD

IPC: F02K1/34 ,  F02C7/24 ,  G10K11/172 ,  G10K11/162

Abstract: An acoustic absorption structure comprising a plurality of resonators. Each resonator comprises a first chamber which has a first mouthpiece delimited by an edge pressed against an inner surface of a porous zone of a skin so that the first chamber and the skin delimit a first cavity, a second chamber, in which is positioned the first chamber, which delimits, with the first chamber, a second cavity, at least one acoustic orifice passing through the first chamber, at least one drainage orifice passing through the first chamber and at least one drainage hole passing the second chamber, each drainage orifice and each drainage hole being configured to limit an accumulation of fluid in the resonator. Also, an aircraft propulsive assembly or an aircraft comprising the acoustic absorption structure are provided.