The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2022
Filed:
Jan. 29, 2019
Safran Nacelles, Gonfreville L'Orcher, FR;
Safran Aircraft Engines, Paris, FR;
Marc Versaevel, Gonfreville L'Orcher, FR;
Denis Ramage, Gonfreville L'Orcher, FR;
Baptiste Cordier, Gonfreville L'Orcher, FR;
Georges Riou, Moissy Cramayel, FR;
Jacky Mardjono, Moissy Cramayel, FR;
Safran Nacelles, Gonfreville L'Orcher, FR;
Safran Aircraft Engines, Paris, FR;
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.