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. 18, 2014
Filed:
Jun. 27, 2012
Bruno Chaduc, Eguilles, FR;
Boris Grohmann, Bouc Bel Air, FR;
Christophe Tempier, Vitrolles, FR;
Airbus Helicopters, Marignane Cedex, FR;
Airbus Helicopters Deutschland GmbH, Donauwoerth, DE;
Abstract
Primary flight controls () for main and/or tail rotors () of helicopters with electro-mechanical interface between any of fly-by-wire and/or fly-by-light controls and hydraulic servo actuators () for control force amplification towards said main and/or tail rotor controls (). For each of the main and/or tail rotor controls () there is provided but one of the hydraulic servo actuators (), connected by one mechanical linkage () to one electro motor (), said one hydraulic servo actuator () being of the type having the one mechanical linkage () connected to its input () and its output () and the one electro motor () being of the direct drive type, the position of said electro motor () having a reference to said one mechanical linkage () and the torque delivered by said electro motor () to the hydraulic servo actuator () being related to the power consumption of said electro motor ().