Patent ID: 9067673
Filing Date: 2015-06-30
Classification: B64F,G01M

Abstract:
1. A method for obtaining the inertial properties of a movable rotating around a hinge line in an aircraft control surface, comprising the following steps: a) removing all mechanical connections of actuators from the movable, leaving the movable free to rotate around the hinge line, further balancing the movable and calculating in a first approach a coarse static moment of the movable; b) refining the static moment of the movable obtained in a), and obtaining simultaneously a frictional moment of the movable; c) incorporating an elastic element on the control surface, configuring a second order mechanical system; d) inducing forced oscillations on the movable at a certain frequency, this frequency being increased until it is sensibly close to a resonance frequency of the movable to obtain a wave response; e) calculating, from the wave response in d), a moment of inertia of the movable.