In this paper,the theory of Air-cushion anti-erosion was advanced and a new type of fan aerofoil was designed ,and it achieved the national new practical patent.

• 本文旨在研究设计一种新型风机叶片，在该新型风机叶栅通道内，能够形成一种阻止被输送介质中的固体颗粒与叶轮叶片接触的理想空气动力场。