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. 10, 2017
Filed:
May. 14, 2013
Applicant:
Airbus Operations (Sas), Toulouse, FR;
Inventors:
Camil Negulescu, Toulouse, FR;
Magdi Omais, Hamburg, DE;
Assignee:
AIBUS OPERATIONS (SAS), Toulouse, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 11/18 (2006.01); B64C 11/48 (2006.01); B64D 27/00 (2006.01);
U.S. Cl.
CPC ...
B64C 11/48 (2013.01); B64C 11/18 (2013.01); B64D 2027/005 (2013.01); Y02T 50/66 (2013.01);
Abstract
Enriching and balancing the acoustic spectrum radiated by a propeller by introducing a differential pitch angle on certain blades of the propeller. Modifying the acoustic spectrum makes it possible to render the propeller noise more pleasant to the human ear.