多叶片螺旋翼模型研究

通过计算机构建叶形相同但叶片数量不同的螺旋翼,并且使用流体力学软件进行仿真.仿真结果显示平均单个叶片的升力与叶片的数量成反比例关系.引入空气角速度变量,加入惯性和延迟环节以改进以前的模型.改进后的模型不仅可以计算多叶片螺旋翼的升力,而且可以计算转速变化过程中升力变化的暂态过程.

Research on the Model of Multi-blade Rotary Wing

There are 4 propellers, which have same shape but a different number of leaf blades, are constructed through computer software and used for fluid dynamics simulation. It was shown from the simulation that there is an inverse proportional relationship between thrust generated by a single blade and the number of blades in the rotary wing. Air angular velocity variable, inertia and delay segment are introduced to improve the previous model. The improved model not only can calculate multi-blade rotary-wing lift, but also can reflect the transient state of the trust during a change of angular velocity