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:
Jun. 26, 2018
Filed:
Oct. 20, 2015
Airbus Helicopters, Marignane, FR;
Jean-Baptiste Vallart, Marseilles, FR;
Hilario Vieira, Berre l'etang, FR;
Airbus Helicopters, Marignane, FR;
Abstract
A method of driving a rotorcraft rotor () at variable controlled speeds. Starting from a required speed (Nr), a setpoint for total power (Pt) is calculated while taking account of an anticipated power (Pf) to be delivered by the power plant () for driving the main rotor () at the required speed (Nr), and while taking account of a power surplus (S) relating to progressive power needs to be delivered from a current power (Pc) for driving the main rotor () at a current speed (V) of rotation to an anticipated power (Pf) for driving the main rotor () at the required speed (Nr). By way of example, account may be taken at least of the acceleration or conversely of the deceleration of the main rotor () between the current speed (V) and the required speed (Nr), or indeed account may be taken of the flight circumstance of the rotorcraftdetermining the calculated required speed (Nr).