Abstract: 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.

Key words: Towed target, Aerodynamic shape, Optimization design