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:
Jun. 21, 2011
Filed:
Dec. 21, 2006
Jason Nadler, Decatur, GA (US);
Florin Paun, Issy les Moulineaux, FR;
Pierre Josso, Issy les Moulineaux, FR;
Marie-pierre Bacos, Antony, FR;
Stéphane Gasser, Paris, FR;
Jason Nadler, Decatur, GA (US);
Florin Paun, Issy les Moulineaux, FR;
Pierre Josso, Issy les Moulineaux, FR;
Marie-Pierre Bacos, Antony, FR;
Stéphane Gasser, Paris, FR;
ONERA (Office National d'Etudes et de Recherches Aerospatiales), Chatillon, FR;
Abstract
A structural element used for attenuating aviation turbine noise is provided with pores () embodied in the form of cylindrical channels which are open on the first ends inside the turbine housing and closed on the opposite ends thereof, wherein the diameter (D) of each channel ranges approximately from 0.1 to 0.3 mm, each channel is remote at least along one part of the length thereof from the closest neighbors at a minimum distance ranging approximately from 0.02 to 0.3 mm and the ratio between the channel length and diameter thereof is of the order of 10.