PROCEDURE AND DEVICE FOR COUNTERRUPTING THE VIBRATIONS INDUCED IN AN AIRCRAFT BY OPERATION IN THE MOUNTAIN OF A SUPPORT OF A TURBORREACTOR.

摘要

Procedure that allows to counteract the induced vibrations, in an aircraft (1) equipped with engines (5 to 8) of the turbojet type, due to the operation in windlass of at least one of the blowers of said engines, said aircraft behaving a system of orders of electric flight (17) that: - generates electric flight control orders (dZ, dY) intended for flight servo controls (25A, 25B, 26A, 26B) suitable for operating the rudders of said aircraft; and - subordinates said servo controls to said electrical flight control orders, limiting the operation of said servo controls to a reduced frequency band, a procedure according to which: - the appearance of said induced vibrations is monitored; and - in case of detection of said induced vibrations:. an additional electrical control command (äZ, äY) is calculated which, applied to the servo control of at least one rudder, allows it to oppose said induced vibrations; . the electric command of return command (dZ, dY) referring to said rudder and said additional electric command of command (äZ, äY) are added to obtain a global command of command for said rudder; Y . said servo command is temporarily subordinated to said global command, allowing the operation of said servo in an extended frequency band.