Abstract: Disclosed is a method and device for estimating forces exerted on at least one aircraft control surface. The method includes steps of, and the device includes components that carry out steps that include: generating current aircraft flight data; determining, from the generated aircraft flight data, a value Bl based on current deflection data and geometrical characteristics of a lever arm actuator of the at least one aircraft control surface; calculating, from the determined value Bl, at least one hinge moment; summing each calculated hinge moment; and dividing the sum by the value Bl to obtain an estimate of the forces exerted on the least one aircraft control surface.

Abstract: The device (1) comprises means (11) for summing various hinge moments calculated, and means (13) for dividing this sum by the value of a lever arm in such a way as to obtain an estimate of the forces exerted on the control surface.

Abstract: The invention concerns a system (1) comprising a steering vane (2) which can turn within a rudder deflection range which is limited by first and second rudder deflection limits and means (12) for asymmetrically varying said first and second rudder deflection limits based on the current values of the aircraft flight parameters.