气囊除冰脱冰原理分析

Pneumatic deicing technology has the advantages of light weight, low energy consumption and stable operation. It has been widely used in the field of aircraft deicing and has great potential in the field of wind turbine deicing, but there is no relevant research at present. Longitudinal acceleration and lateral displacement are two very important parameters in the process of airbag expansion. In this paper, the change law of the longitudinal acceleration and lateral displacement of the airbag with the inflation pressure and the width of the airbag and the distribution law on the surface of the airbag are obtained through experiments. Combined with the deicing process under different pressures, the deicing mechanism of air bag is obtained. It is concluded that the shear force is the main reason to destroy the connection between the ice and the air bag in the process of pneumatic deicing, and the acceleration of the air bag can make the ice fall off only after overcoming the residual adhesive force and molecular force.