低空恒高拖靶气动外形优化设计

首先根据经验方法及使用需求，确定低空恒高拖靶气动布局初步方案；其次建立优化问题数学模型，选取与拖靶升阻特性相关的参数作为设计变量，确定了样本空间，并采用拉丁超立方抽样方法生成样本点，构建了代理模型，随后基于iSIGHT软件平台利用基于代理模型优化方法对气动外形进行优化设计；最后利用三维气动计算软件在优化结果基础上进行了气动分析。

Optimization Design of Aerodynamic Shape for the Low Level Height Keeping Tow Target

First, the primary aerodynamic configuration layout of the low level height keeping towed target is defined according to practical method and using requirements.Then, mathematical model of the optimization issue is established,and the parameters pertinent to lift-drag characteristics of the tow target are selected as design variables to determine the sample space,and the sample points are produced by Latin hypercube method, then the surrogate model is constructed and the aerodynamic shape is optimized by the application of the surrogate model optimization method based on the platform of iSight.In the end,the optimized results are taken as the basis for aerodynamic configuration,and the aerodynamic analysis is carried out with the three dimensional CFD software using the results of the optimization.