乘波体气动性能综合优化  

Upper/Lower Surface of Waverider Integrated Optimization

作　　者：彭钧[1] 陆志良[1] 李文正[1] 

机构地区：[1]南京航空航天大学航空宇航学院

出　　处：《南京航空航天大学学报》2007年第3期307-311,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：提出了用欧拉方程求解基本外形的流场,利用高超声速线化摄动方法求出外形微扰动影响量,然后以修正后的外形作为下一步的基本外形,对外形反复进行渐近优化修正,以实现对乘波体上表面进行全三维整体优化的设计方法。本文的优化设计还考虑了上下表面优化的相互影响、低速性能以及操稳特性的要求,从而得到综合优化的乘波体整体气动性能。To bring out practical optimized waverider configuration, the parameters for affecting performances of the waverider on selecting optimization target are discussed. An optimization method for upper surface of the waverider and reasonable constraints in certain purpose are presented. Only if the upper surface is involved in the optimization procedure, the best integrated performance of the waverider configuration is obtained. The lower surface of the waverider can be derived from the known flowfield and its pressure distribution is known. Optimization procedure for the lower surface is relatively simple. The optimization process based on small perturbation linearizing for upper surface is presented. The upper/lower surface integrated effect is considered in the integrated optimization process.

关 键 词：乘波体 优化 高超声速飞行器 小扰动 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程] O357.4[理学—流体力学]