Patent ID: 8190306
Filing Date: 2012-05-29
Classification: G05D

Abstract:
1. A method for attenuating vertical turbulence on an aircraft during flight, the method comprising the steps of: a) determining, by a wind determining unit, a vertical wind component existing outside the aircraft at a current position of said aircraft; b) calculating, by a calculating unit, based on the determined vertical wind component: c) verifying, by a verification unit, activation conditions evidencing severe turbulence are in effect; wherein in the course of the flight, the following series of successive steps is carried out: α) determining, based on the determined vertical wind component, a standard deviation of the wind; β) comparing the determined standard deviation with a predetermined threshold value, said threshold value being such that, when the determined standard deviation is greater than or equal to said threshold value, the frequency of the wind is less than that of an oscillation of the incidence of the aircraft, due to the wind; γ) calculating, based on current flight parameter values, a second auxiliary control order to control said second controllable movable member to act on the aircraft pitch, said second auxiliary control order acting indirectly on the aircraft lift at a center of gravity of the aircraft to increase the load factor amplitude; and δ) transmitting, when said standard deviation is greater than or equal to said threshold value, said second control order to the actuator of said second movable member so that said second movable member is subjected to a global control order corresponding to a sum of said second control order and of said second auxiliary control order.