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:
Feb. 22, 2011
Filed:
Mar. 23, 2007
Eric Jean-louis Bouty, Moissy Cramayel, FR;
Alain Dravet, Les Pennes Mirabeau, FR;
Thierry Jacques Albert Le Docte, Gainneville, FR;
Georges Jean Xavier Riou, Melun, FR;
Thomas Alain Christian Vincent, Gif sur Yvette, FR;
Eric Jean-Louis Bouty, Moissy Cramayel, FR;
Alain Dravet, Les Pennes Mirabeau, FR;
Thierry Jacques Albert Le Docte, Gainneville, FR;
Georges Jean Xavier Riou, Melun, FR;
Thomas Alain Christian Vincent, Gif sur Yvette, FR;
SNECMA, Paris, FR;
Abstract
A device for attenuating acoustical noise from an exhaust nozzle of a turbojet is disclosed. The turbojet exhaust nozzle includes a central body defining the inner surface of the primary gas flow path. The central body includes an outer wall defining one, and only one, resonator cavity. The single resonator cavity is in fluid communication with the primary gas flow path via orifices through at least one upstream portion of the outer wall. The single resonator cavity and plurality of orifices compose a Helmholtz resonator.