A load loading method in the limit load test of movable surface

Abstract

The invention relates to a loading method in a movable surface limit load test and belongs to the field of airplane structure tests. The method comprises steps of: disposing a plurality of loading points on the movable surface of a wing along the extension direction of the wing; disposing a plurality of loading mechanisms to load the loading points, wherein the loading mechanisms are fixed to the a upright wall and can be driven by a driving mechanism to move up and down along the wall; simulating the deformation of any loading point under any loading level in the movable surface limit load test; performing loading tests of various loading levels according to the deformation, wherein before the loading test of any loading level, the loading mechanism enables the loading points to move with the deformation corresponding to respective loading levels. The method may complete loading of limit load in the movable surface limit load test, and cannot damage the movable surface or a wing box prior to the loading of limit load.

Description

technical field [0001] The invention belongs to the field of aircraft structure strength test, in particular to a load loading method in the limit load test of movable surfaces. Background technique [0002] The airfoil of the wing is composed of the main box section and many movable airfoils (referred to as the movable surface). Since the deformation of the main box section of the airfoil has a great influence on the force on the movable surface, in the prior art, in order to ensure that the movable surface The adequacy of the test verification, when carrying out the ultimate load test on the active surface, the active surface should be tested together with the main box section. However, considering the safety of the structure of the main box section, the main box section is generally only loaded to the limit load (67% of the ultimate load), and the displacement of the hanging point of the movable surface has not reached the real displacement, resulting in the limit load te...

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Problems solved by technology

However, considering the safety of the structure of the main box section, the main box section is generally only loaded to the limit load (67% of the ultimate load), and the displacement of the hanging point of the movable surface has not reached the real displacement, resulting in the ultimate load test of the movable surface. full

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