The present invention relates to a wing flexibility simulation device of an aircraft and a wing flexibility test method using the same. A plate member for wing flexibility simulation that operates in the same resonance first mode as that of the wing, and the plate member for wing flexibility simulation. By performing a wing flexibility test on the ground by being mounted on a vehicle including a plate support member supporting one end of the plate member for wing flexibility and an inertia measuring device mounted on the plate member for wing flexibility simulation so that the other end is floating It saves manpower, cost, and time for wing flexibility test, and shortens the design and development period of the vehicle.
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