Flexible propeller hub suitable for helicopter lift system

The flexible propeller hub suitable for the helicopter lift system comprises a propeller hub body and two connecting parts, the two connecting parts are fixedly connected with the two sides of the propeller hub body respectively, the connecting parts are obliquely arranged, and one end of each connecting part is fixedly connected with an operating arm; the propeller hub comprises more than two first high-strength material layers which are connected with each other, the connecting part comprises a mixed layer and a second high-strength material layer which are arranged at intervals, the mixed layer comprises two third high-strength material layers and an elastic layer, one side wall of the elastic layer is connected with one third high-strength material layer, and the other side wall of the elastic layer is connected with the other third high-strength material layer. And the other side wall of the elastic layer is connected with the other third high-strength material layer. The flexible propeller hub is simple