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研究了通用航空飞行器气动布局设计优化问题。应用基于二次曲线的模线设计方法,实现了通用航空飞行器的参数化外形建模。采用修正的牛顿流理论进行高超声速气动特性计算。在保持纵向稳定性的条件下,以升阻比和容积效率最大化为目标,建立通用航空飞行器气动布局多目标优化模型。应用基于小生境竞争排挤机制的多目标遗传算法求得优化模型的非劣解集。将物理规划设计方法与稳定、高效的粒子群优化算法相结合,有效地求解该优化模型的折衷解。优化结果表明本文的通用航空飞行器气动布局设计优化方法是有效的。
The aerodynamic layout design optimization of general aviation aircraft is studied. The design method of mold line based on quadratic curve is used to realize the parametric shape modeling of general aviation aircraft. A Newtonian Theory of Correction for Hypersonic Aerodynamic Characteristics. Under the condition of maintaining the longitudinal stability, a multi-objective optimization model of aerodynamic layout for general aviation aircraft is established with the goal of maximizing the lift-drag ratio and volumetric efficiency. Applying Multiobjective Genetic Algorithm Based on Crowding out Mechanism of Nugget Competition to Solve Noninferior Solution Set of Optimization Model. The physical programming design method is combined with the stable and efficient particle swarm optimization algorithm to solve the tradeoff solution of the optimization model effectively. The optimization results show that the method of aerodynamic layout design optimization of GA is effective.