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. 14, 2017
Filed:
Sep. 22, 2016
Airbus Helicopters, Marignane, FR;
Jean-Baptiste Vallart, Aix en Provence, FR;
Setareh Taheri, Aix en Provence, FR;
Nicolas Certain, Aix en Provence, FR;
AIRBUS HELICOPTERS, Marignane, FR;
Abstract
A device for regulating the speed of rotation of at least one main rotor of a rotorcraft, which speed is known as the speed NR. Such a rotorcraft comprises at least one manual flight control member for delivering a collective pitch control setpoint C for the blades of the at least one main rotor, the control setpoint C being a function of a current position of the at least one control member; and detector means enabling a current state to be detected from at least two distinct states of the rotorcraft, namely a 'ground' state in which the rotorcraft is in contact with the ground, at least in part, and a 'flight' state in which the rotorcraft is at least being sustained in the air.