Abstract:The dynamic aerodynamic load received during the deflection of the movable airfoil continuously changes with the state of motion, and the direction is always perpendicular to the chord plane of the airfoil. Therefore, in order to truly simulate the real load state during the motion of the movable airfoil, the movable airfoil function test load The process needs to be continuous and synchronized with the wing surface retracting process/state, with the ability to follow the wing surface movement, and to ensure that the load is dynamic perpendicular to the wing surface. In order to meet the test loading requirements, a swing arm type follow-up loading technology was proposed, and a follow-up loading device was designed. Then the feasibility, effectiveness and practicability of the new method were verified through simulation tests. Finally, the technology was applied to In the durability test of a certain model of flaps and slats, the test was successfully completed, and the data analysis showed that the loading method met the test requirements.