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:
Aug. 04, 2020
Filed:
Jun. 13, 2018
Applicant:
Airbus Helicopters, Marignane, FR;
Inventor:
Anthony Leonard, Aix en Provence, FR;
Assignee:
AIRBUS HELICOPTERS, Marignane, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/00 (2006.01); B64D 31/06 (2006.01); F02C 9/28 (2006.01); B64D 35/02 (2006.01); F02C 9/56 (2006.01); F02C 9/00 (2006.01);
U.S. Cl.
CPC ...
B64C 27/001 (2013.01); B64D 31/06 (2013.01); B64D 35/02 (2013.01); F02C 9/00 (2013.01); F02C 9/28 (2013.01); F02C 9/56 (2013.01); F05D 2220/329 (2013.01); F05D 2260/96 (2013.01); F05D 2270/304 (2013.01); F05D 2270/334 (2013.01); F05D 2270/807 (2013.01);
Abstract
A regulation system for controlling the vibratory behavior in twisting and/or the twisting stability of a drivetrain of a rotorcraft, the regulation system comprising two regulation loops that are interleaved one in the other, the two regulation loops being arranged 'in cascade' relative to each other to regulate firstly a first speed of rotation NG of a gas generator of at least one turboshaft engine driving said drivetrain in rotation, and secondly a second speed of rotation NTL of a free turbine of the engine(s).