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:
Apr. 14, 2020
Filed:
Mar. 07, 2017
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Derek J. Michaels, Vernon, CT (US);
Dilip Prasad, North Granby, CT (US);
Assignee:
UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/04 (2006.01); F02C 7/045 (2006.01); F02C 7/057 (2006.01); F01D 25/06 (2006.01); F01D 5/26 (2006.01); F02C 9/00 (2006.01); B64D 33/02 (2006.01);
U.S. Cl.
CPC ...
F02C 7/045 (2013.01); F01D 5/26 (2013.01); F01D 25/06 (2013.01); F02C 7/057 (2013.01); F02C 9/00 (2013.01); B64D 2033/0206 (2013.01); F05D 2220/36 (2013.01); F05D 2260/96 (2013.01); F05D 2260/962 (2013.01); F05D 2270/44 (2013.01); F05D 2270/62 (2013.01); F05D 2270/80 (2013.01); Y02T 50/672 (2013.01);
Abstract
Disclosed is a flutter damper, including an acoustic liner configured for peak acoustical energy absorption at a frequency range that is greater than a frequency range associated with fan flutter, a chamber, and a piezoelectric element disposed within a first surface of the chamber, and the chamber being configured for peak acoustical energy absorption at a frequency range that is associated with one or more fan flutter modes, and wherein the piezoelectric element is operatively connected to an electronic engine control.