Acoustic attenuation panel comprising a front skin and a central structure

US11629644B2 · kind B2 · utility

Assignees

• SAFRAN NACELLES · FR
• SAFRAN · FR

Inventors

• Marc Versaevel · Montivilliers, FR
• Jean-Philippe Ginefri · Gonfreville-l'Orcher, FR
• Fabrice Provost · Notre-Dame-du-Bec, FR
• Jeremy Quesnel · Gonfreville-l'Orcher, FR
• Wouter Balk · Weesp, NL
• Sébastien LOUCHARD · Montivilliers, FR
• Loïc LE BOULICAUT · Le Havre, FR

Key dates

• Filing date: May 14, 2019
• Grant date: Apr 18, 2023
• Expiry date: Feb 16, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An acoustic attenuation panel for a propulsion assembly includes an acoustic front skin having perforations, and a central structure formed from partitions arranged perpendicularly in order to make up cells, wherein the front skin and the central structure form the panel which is made as a single piece and is provided for directly covering a surface of an element of the propulsion assembly forming a rear skin which closes the cells of the central structure at the rear.