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:
Oct. 15, 2019
Filed:
Aug. 18, 2016
Applicant:
Sikorsky Aircraft Corporation, Stratford, CT (US);
Inventor:
Joseph J. Andrews, Hamden, CT (US);
Assignee:
SIKORSKY AIRCRAFT CORPORATION, Stratford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/51 (2006.01); B64C 27/00 (2006.01); B64C 27/473 (2006.01); F01D 25/06 (2006.01); F01D 5/10 (2006.01); F01D 5/16 (2006.01); F01D 25/04 (2006.01); F03D 7/02 (2006.01);
U.S. Cl.
CPC ...
B64C 27/001 (2013.01); B64C 27/473 (2013.01); B64C 27/51 (2013.01); B64C 2027/005 (2013.01); B64C 2027/4736 (2013.01); F01D 5/10 (2013.01); F01D 5/16 (2013.01); F01D 25/04 (2013.01); F01D 25/06 (2013.01); F03D 7/0296 (2013.01);
Abstract
A rotor damping system includes a rotor blade defining opposed leading and trailing edges, wherein the rotor blade has flexibility in an edgewise direction defined between the leading and trailing edges. A spar is mounted within the rotor blade, wherein the spar is stiff against flexure in the edgewise direction. A damper is operatively connected to the spar for damping relative motion of the spar and blade.