Multi-phase trajectory collaborative optimization for a hypersonic vehicle
-
摘要: 利用协作优化方法求解了高超声速飞行器多段弹道整体性能最优问题.将高超声速飞行器在垂直平面的弹道分成多段,对引入段、滑行段、下降段进行了优化设计,期望引入段终端时刻速度最大、滑行段距离最远、下降段时间最短.把3段弹道当成3个学科,以攻角和各段的初始状态作为输入,以末端状态作为输出.开发了并行协作优化设计软件coplatform,并求解多段弹道的整体最优解.其计算结果与all in one方法和全局敏度GSE(Global Sensitivity Equations)方法求得的结果一致,也验证了协作优化方法的有效性.Abstract: A approach was proposed to solve multi-phase trajectory optimization problem. The approach allowed the trajectory for hypersonic vehicle in vertical plane dividing into several phase, then obtained the multi-phase trajectory optimal value by collaborative optimization method. Only the transitional phase, gliding phase and descending phase were investigated. The expectation was that the terminal velocity maximum in transitional phase, the range maximum in gliding phase and the flight time minimum in descending phase. The three phase was regarded as three discipline, and the attack angle and initial condition were as input and terminal condition as output for every discipline. The collaborative optimization software coplatform was developed to solve the multi-phase trajectory problem. The result is identical with the one obtained by all in one method or globle sensitivity equation(GSE) method. It also shows the collaborative optimization method is effective to solve the multi-phase trajectory problem.
-
Key words:
- hypersonic vehicle /
- trajectory /
- optimization
-
[1] Chuang C H, Morimoto H. Periodic optimal cruise for a hypersonic vehicle with constrains[J]. Journal of Spacecraft and Rockets,1997, 34(2):165-171 [2] Istratie V. Optimal skip entry with terminal maximum velocity and heat constraint . AIAA-98-2457,1998 [3] 周浩,陈万春,殷兴良. 高超声速飞行器滑行航迹优化[J]. 北京航空航天大学学报,2006,32(5):513-518 Zhou Hao,Chen Wanchun,Yin Xingliang. Optimization of glide trajectory for a hypersonic vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics,2006, 32(5): 513-518 (in Chinese) [4] 周浩,周韬,陈万春,等.高超声速滑翔飞行器引入段弹道优化[J].宇航学报,2006,27(5):970-973 Zhou Hao,Zhou Tao,Chen Wanchun,et al. Trajectory optimization in injection phase for hypersonic gliding vehicel[J].Journal of Astronautics,2006,27(5):970-973(in Chinese) [5] Gath Peter F. CAMTOS-A software suite combining direct and indirect trajectory optimization methods . Stuttgart: Institute of Flight Mechanics and Control,University of Stuttgart, 2002 [6] Sobieski J S. Aircraft design using collaborative optimization . AIAA-96-0715,1996 -
点击查看大图
计量
- 文章访问数: 3100
- HTML全文浏览量: 140
- PDF下载量: 1010
- 被引次数: 0
下载:
