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以气动力及雷达散射截面参数为目标函数 ,主要优化对总体外形和飞机性能影响较大的机翼、尾翼的平面形状几何参数以及少数几个机身几何参数 ;根据第 4代战斗机的设计要求 ,确定各个目标的理想值、最低可接受值 ,以及各个约束的满足区间 ,应用模糊优化理论 ,建立各个目标的满意度函数及各个约束条件的满足度函数 ,并使用多目标总满意度函数和常权、变权的不同组合 ,建立了 5种外形参数模糊优化模型 ,使设计人员可以根据不同的设计思想和设计目的选择优化模型与翼面形状的组合 .
Taking aerodynamic force and radar cross section parameters as objective functions, the geometrical parameters of wing and tail plane, which have great influence on the overall shape and aircraft performance, and a few geometric parameters of the fuselage are optimized. According to the design requirements of the 4th generation fighter , To determine the ideal value of each target, the lowest acceptable value, as well as the satisfaction of each constraint interval, the application of fuzzy optimization theory to establish the satisfaction of each objective function and the satisfaction of each constraint function, and use the multi-objective total satisfaction function and Regular and variable weights, five fuzzy optimization models of shape parameters are established so that designers can choose the optimal combination of model and airfoil shape according to different design ideas and design goals.