栅格翼和机身组合体的气动特性计算与分析

Aerodynamic Analysis of Grid Fin-Body Configurations

给出计算栅格翼和机身组合体亚超音速气动力干扰理论方法 .亚音速采用涡格法计算栅格翼气动力 ,用一个二维偶极子和圆柱映像涡系模拟机身的上洗流场和栅格翼迁移到机身上气动载荷 .超音速假定栅格翼处在机身横向流动的上洗流场中 ,用翼片理论计算机身对栅格翼气动力干扰的修正因子 .用本文方法计算了几个栅格翼和机身组合体的气动特性的到了比较满意的结果 .

Aerodynamic analysis is made for grid fin body configurations in subsonic and supersonic flow. Vortex lattice formulation has been used in predicting the aerodynamic characteristics for grid fin in subsonic flow. An infinite line doublet and imaging vortices inside the body are employed to model body upward and wing body carry over load.In supersonic flow, the grid fin is assumed to locate in the cross flow of the body, the wing panel theory is used for calculating the aerodynamic interfere factor of the grid fin produced by the body. The aerodynamic characteristics of some grid fin body configurations have been calculated, the theory agreed quite well with the experimental data.