针对钣料柱面叶片无法满足气动设计所规定的扭曲规律的要求和一般三元叶片加工复杂性的问题,本文提出了一种新的叶片造型方法:首先从S_2流面反命题的一组方程出发,进行三元叶片设计。然后,采用满足一条流线加载,其余加载流线用可展面进行最小二乘逼近的方法,将三元叶片面变成可展叶片面。为了验证新型面的气动性能,对其进行了性能实验,实验表明,气动性能是优良的。该设计方法具有广泛的应用前景。 In order to solve the problem that sheet cylinder cylindrical blade can not meet the requirement of the twisting regularity of aerodynamic design and the machining complexity of general three-element blade, a new blade modeling method is proposed in this paper. Firstly, Starting, the three-leaf design. Then, a triaxial blade surface is made into a developable blade surface by adopting a method of satisfying one streamline loading and the rest of the loading streamlines using a developable least square approximation method. In order to verify the aerodynamic performance of the new surface, its performance experiments were carried out, experiments show that the aerodynamic performance is excellent. The design method has a wide range of applications.