非圆截面导弹气动力估算方法研究

Predicting Method for Aerodynamic Force of Noncircular Section Missile

从位势理论出发 ,引用小扰动细长体理论中的部分思想 ,建立了任意截面弹体法向气动力的工程估算方法 .通过对已有的圆截面弹体气动力进行与截面形状相关系数修正 ,很方便地得到任意非圆截面弹体气动力特性 .该方法与部件空气动力学求解机翼气动力方法结合 ,可以预测任意截面导弹的气动力特性 .

The method of engineering approximate estimated aerodynamic normal force of arbitrary section body has been established by using velocity potential theory and small disturbance slender body theory.By being calculated coefficient of cross section shape and modifying areodynamic normal force of circular section body,this method can be conveniently used to predict aerodynamic characteristics of arbitrary section body.A component build up method,which uses this method for body alone and lifting line analysis for wing alone,has been developed.Comparation of predicting results and experimental data were agreeable well.