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:
May. 26, 2020
Filed:
Jun. 25, 2014
Applicant:
Airbus Helicopters, Marignane, FR;
Inventors:
Damien Reveillon, Avoine, FR;
Laurent Bianchi, Marseilles, FR;
Assignee:
Airbus Helicopters, Marignane, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/473 (2006.01); F01D 5/14 (2006.01); B64C 27/72 (2006.01); B64C 11/20 (2006.01);
U.S. Cl.
CPC ...
B64C 27/473 (2013.01); F01D 5/147 (2013.01); B64C 2027/4736 (2013.01); B64C 2027/7222 (2013.01); B64C 2027/7266 (2013.01); Y02T 50/34 (2013.01);
Abstract
A blade of a rotor for a rotary-wing aircraft is equipped with an outer covering extending along the span of the blade. This outer covering is provided with an extrados skin and with an intrados skin defining a cavity. The blade also includes a structure that extends into the cavity and connects the blade to a hub of the rotor. The cavity is filled with a filling material that includes at least one partition parallel to a chord of the blade and at least two independent blocks of filling material filling the cavity, thereby allowing the reduction of the torsional rigidity along the span of the blade.