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:
Nov. 10, 2015
Filed:
Nov. 08, 2012
Airbus Helicopters, Marignane, FR;
Serge Germanetti, Marseilles, FR;
Airbus Helicopters, Marignane, FR;
Abstract
The present invention relates to a device () for varying blade pitch of a rotary wing aircraft () having a main rotor () with a plurality of blades (), each blade () including at least one main flap () fastened to the trailing edge of the blade (). The angle of inclination of each flap () is controlled via a swashplate (). The device () makes provision for electric actuators controlled by a flight control system () to be mounted in a stationary frame of reference for the purpose of moving and varying the angle of inclination of the non-rotary plate of the swashplate (). The electric actuators provide primary flight control and also multi-cyclic control for the purpose of attenuating noise and vibration as generated in particular by the blades () and the rotor ().