Static test loading method for long straight wings of small unmanned air vehicle

A static test loading method for long straight wings of a small unmanned air vehicle is characterized in that: a loading device includes wing chordwise tie belts (2), wing spanwise tie belts (4) which can constraint spanwise movement of the wing chordwise tie belts (2), wing loading point hanging rings (8) which are located on the wing chordwise tie belts (2), a locking device (3) which is located between a left wing and a right wing and under the wings and connects the spanwise tie belts (4) of the left wing and the right wing, and loading sandbags (7). According to the method, a tie belt frame design can be adopted, and a plurality of chordwise high-strength tie belts and spanwise high-strength tie belts constrained on a surface of the wings can form an outer load transmission frame, so that the weight of the loading sandbags can be converted into the load of the wings of the air vehicle, and the method can be used for static test loading of a structure. The loading method and device are easy to use, are re