栅格翼与机身发动机组合体的气动特性计算

本文给出了栅格翼和机身、机身和发动机以及机身的台阶与其前后柱体等复杂气动力干扰的计算方法，考虑栅格翼与机身气动干扰时，假定栅格翼处在机身的向流动的上洗流场中，用翼片理论计算有机身影响时栅格翼上载荷分布，考虑机身和发动机气动干扰时，有杉一个机身和上个发动机组成的十字型五体组合体模型，用保角变换算出干扰因子，考虑机身台阶与其前后柱体的气动干扰时，采用锥柱体和截锥结合实验修正的方法，用本方法计算了栅格翼

CALCULATION OF GRID BODY ENGINE CONFIGURATION

A method is presented for calculating complex aerodynamic interference between grid fins and bodies,bodies and engines,frustums and cylinders.When the aerodynamic interference is considered for a grid fin body configuration,the grid fin is assumed to locate in the cross flow of the body,the wing panel theory is used for calculating the load distribution of the grid fin.When the aerodynamic interference is treated for a body engine combination,a model of a body four engine combination is applied to evaluate the interference factor by the conformal mapping method.When the aerodynamic influence is determined for frustums and cylinders,a empiric correcting method is utilized by some results of cylinder bodies and frustums.The aerodynamic characteristics of a grid fin body engine configuration is calculated,a more satisfied result is obtained.