飞行器气动与隐身性能一体化优化设计方法研究

首先根据多学科综合优化设计理论 ,针对飞行器外形布局设计特点 ,开展飞行器气动与隐身性能综合优化设计方法研究。分别采用线化格林函数法与粘性修正相结合以及物理光学法与等效电流法相结合的方法 ,建立了飞行器气动力特性与隐身特性的计算方法。利用多学科优化设计理论和遗传优化算法 ,开展了关于飞行器气动与隐身性能的协同优化设计方法研究。取得了初步的研究结果。

Investigation into Collaborative Optimization Design Techniques of Aircraft Aerodynamics and Stealth Performances

Aerodynamics/stealth performance integration optimization techniques in aircraft configuration design are investigated,based on multi-discipline/milti-objective optimization. First, the design model for integration of aerodynamic configuration and stealth optimization is built. Then, the Green's function method for steady aerodynamics is used as the basic method and the engineering method is used to compute the aerodynamic performance, and the physical optics method with the equivalent current method are used as the basic methods for RCS. The linear combined weighted object optimization methodwith simple genetic algorithmis used as multi-objective optimization methods. Compared with the baseline configuration, the aerodynamicand stealth performances of optimized configurations are improvedgreatly.