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翼身融合运输机气动布局优化设计
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摘要
针对翼身融合布局运输机的设计需求,对概念方案的平面形状、翼型剖面、内部空问以及发动机安装位置等方面进行综合优化设计,以确定出综合性能较优的翼身融合体气动外形。优化设计以翼身融合体外形参数化方法为基础.结合气动特性的简化数值分析模型,建立气动布局优化设计流程。以一种翼身融合布局货运飞机作为案例,应用该气动布局优化设计流程实现了概念方案的优化设计。计算结果显示,优化方案在满足内部空间要求以及结构设计约束的前提下.显著提高了气动特性。实际应用表明,本文所建立的优化设计流程适用于翼身融合布局运输机的概念方案设计。
To meet requirements of the blended wing-body(BWB) transport aircraft,the conceptual design which includes the planform,airfoil,internal space and engine installation,has been optimized to get the high performance aerodynamic configuration of the BWB.The way of optimization based on the parametric method of the BWB profile,combined with the simplified numerical aerodynamic model,and focused on the process of aerodynamic configuration design optimization.The optimization process has been used for the aerodynamic optimization of a BWB cargo plane,and the conceptual design has been completed with this process.Calculation results show that the optimized design could improve the aerodynamic performance significantly and satisfy the requirements of internal space and structures.Applications indicate that the optimization process established in this paper is suitable for the conceptual design of the BWB transport aircraft.
引文
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