摘要
针对高速无动力变构形飞行器航迹优化与飞行策略设计问题,提出了可变构型航迹优化与飞行策略设计方法。建立可变构型气动代理模型,以一、二锥展长为变形飞行器外形参数,与攻角、倾侧角共同构成飞行器航迹优化变量,完成航迹优化的同时获取飞行器最佳飞行策略。算例以最大射程为主要优化目标,分别对可变构型与大升阻比固定构型飞行器的航迹进行优化,得到可变构型模式下飞行器最优变形策略。仿真结果表明,可变展长飞行模式较固定展长飞行模式需用攻角范围降低57%,射程提升11.9%。研究结果为高速可变构型飞行器外型设计与航迹优化的研究提供一定参考。
Based on the trajectory optimization,a flight strategy design method is proposed for high-speed unpowered morphing vehicle with a varying shape in the trajectory. Firstly,the first cone span and the second cone span are chosen as the shape parameters for the deforming vehicle and an aerodynamic surrogate model is built based on the polynomial response surface method( RSM). And then,in order to determine the optimal flight strategy of the vehicle,the trajectory is optimized for the deforming vehicle based on the aerodynamic data provided by the surrogate model. In the trajectory optimization,the angle of attack,the angle of bank and the two cone spans are considered as the control variables,and the maximum range is taken as the optimization objective. Moreover,a trajectory optimization for fixed shape is also provided as a comparison. The simulation results show that the range of deforming-shape flight mode is 11. 9% higher than that of the fixed-shape flight mode,and the range of the required angle of attack is57% lower than that of the fixed-shape flight mode. The results have a certain reference value for the research of the high-speed morphing vehicle’s shape design and trajectory optimization.
作者
朱睿颖
齐征
王兰松
苗萌
白光辉
王晨
惠向阳
Zhu Ruiying;Qi Zheng;Wang Lansong;Miao Meng;Bai Guanghui;Wang Chen;Hui Xiangyang(Science and Technology on Space Physics Laboratory,China Academy of Launch Vehicle Technology,Beijing 100076,China)
出处
《战术导弹技术》
北大核心
2020年第5期157-164,共8页
Tactical Missile Technology
关键词
航迹优化
变形飞行器
代理模型
伪谱法
trajectory optimization
deforming vehicle
surrogate model
pseudo-spectral method
