Invention Grant
- Patent Title: Acoustic attenuation panel for an aircraft propulsion unit and propulsion unit including such a panel
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Application No.: US16260972Application Date: 2019-01-29
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Publication No.: US11220346B2Publication Date: 2022-01-11
- Inventor: Marc Versaevel , Denis Ramage , Baptiste Cordier , Georges Riou , Jacky Mardjono
- Applicant: Safran Nacelles , Safran Aircraft Engines
- Applicant Address: FR Gonfreville L'Orcher; FR Paris
- Assignee: Safran Nacelles,Safran Aircraft Engines
- Current Assignee: Safran Nacelles,Safran Aircraft Engines
- Current Assignee Address: FR Gonfreville L'Orcher; FR Paris
- Agency: Burris Law, PLLC
- Priority: FR16/57412 20160729
- Main IPC: B64D33/02
- IPC: B64D33/02 ; F02K1/82 ; F02C7/045 ; G10K11/172 ; F02K1/34 ; B64D29/00 ; F02C7/24 ; G10K11/16 ; G10K11/168

Abstract:
An acoustic attenuation panel for a propulsion unit including a nacelle and a turbojet engine includes a cellular core disposed between an inner skin and an outer skin, called acoustic skin, the acoustic skin including a plurality of acoustic apertures, the acoustic apertures being inclined, at a non-zero inclination angle (β) relative to the direction normal to the acoustic skin, upstream with respect to the flow direction of the air or gas flow to which the panel is intended to be subjected under normal operating conditions, that is to say upstream of the propulsion unit when the panel is mounted in such a unit.
Public/Granted literature
- US20190161200A1 ACOUSTIC ATTENUATION PANEL FOR AN AIRCRAFT PROPULSION UNIT AND PROPULSION UNIT INCLUDING SUCH A PANEL Public/Granted day:2019-05-30
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