机翼的气动伺服弹性设计优化研究  

Aeroservoelastic Design Optimization of Flexible Wings

作　　者：吴志刚[1] 杨超[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《航空学报》2006年第4期570-573,共4页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(10372013);航空基础科学基金(03A51050);新世纪优秀人才支持计划(NCET-04-0170)

摘　　要：以气动伺服弹性特性为约束和目标,对一个大展弦比机翼进行了结构/控制设计优化。该机翼具有双梁式结构和一个用于阵风响应减缓的主动控制面。在气动伺服弹性分析模型的基础上,建立了优化问题的数学描述。选取结构刚度和控制器参数为设计变量,以发散、无控和有控情况的颤振为约束条件,以结构重量和阵风响应组合性能为目标函数。采用遗传算法进行优化,得到的最优设计结果与原基准模型相比,机翼在满足气动弹性稳定的约束条件下,结构重量有所减轻,且阵风响应显著地减缓。The structure/control design optimization of a large aspect-ratio wing considering aeroservo- elastic characteristics as constraints and objects is presented. The wing has a two-spar structure and an active control surface for gust response alleviation. On the basis of the aeroservoelastic analytic model, the mathe- matical model of the optimization problem is formulated. The structural stiffness and control parameters are chosen as the design variables, divergence and flutter are defined as the constraints, and the combined performance of structural weight and gust response are defined as the object function. The genetic algorithm is applied to perform the optimization process. The results show that the optimal wing has lighter weight and remarkable improvement in gust response compared with the baseline wing model.

关 键 词：气动弹性 气动伺服弹性 多学科设计优化 遗传算法 

分 类 号：V215.3[航空宇航科学与技术—航空宇航推进理论与工程]