基于气动-弹道一体化模型的飞行器外形优化设计  

Shape optimization design for vehicles based on aerodynamic and trajectory integrated model

作　　者：张海瑞[1] 秦梦 周国峰[1] 王浩[1] ZHANG Hairui;QIN Meng;ZHOU Guofeng;WANG Hao(China Academy of Launch Vehicle Technology, Beijing 100076, China)

机构地区：[1]中国运载火箭技术研究院,北京100076

出　　处：《国防科技大学学报》2021年第1期27-32,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11602306)。

摘　　要：为提升飞行器气动外形优化设计效果,研究了新型飞行器在大空域、宽速域范围的气动适应性问题,提出一种基于气动-弹道一体化模型的外形优化设计方法。通过考虑气动和弹道的耦合作用,综合利用类型函数/形状函数转换技术、气动工程估算方法和Radau伪谱法,建立飞行器气动-弹道一体化模型。基于该模型,通过明确优化目标和约束条件,给出基于Kriging的气动外形优化方法,实现在多参数约束条件下的飞行器气动外形高效全局优化。以升力体构型飞行器为例,开展气动外形优化设计,结果表明该方法能较好地描述大空域、宽速域的气动和弹道特征,有效提升飞行器气动外形设计精度和水平,可为新型飞行器总体设计提供技术支撑。In order to improve the effect of the shape optimization design,the influence of the flight profile with large-airspace and wide speed range for new type of vehicles on aerodynamic shape was studied and a new shape optimization design method based on the aerodynamic and trajectory integrated model was proposed.By this method,the aerodynamic and trajectory integrated model was constructed by using the CST(class/shape function transformation)parametric method,engineering estimation and the Radau pseudospectral method.To implement the efficient global optimization within multi-constraints,an aerodynamic shape optimal design method based on Kriging surrogate model was proposed after clearing the optimization target and constraint condition.The shape optimization design for a type of lifting body vehicles was carried out.It is shown that the aerodynamic and trajectory feature of large-airspace and wide speed range can be better described,and the accuracy and performance of the shape optimization design are improved,which can provide technical support for the conceptual aircraft design.

关 键 词：参数化设计 Radau伪谱法 KRIGING模型 气动外形优化 高效全局优化 

分 类 号：V411[航空宇航科学与技术—航空宇航推进理论与工程]