基于路径约束分析的跳跃式再入轨迹优化

1. 国防科学技术大学 航天科学与工程学院, 湖南 长沙 410073
• 收稿日期:2013-07-08 修回日期:2014-03-19 出版日期:2014-05-25 发布日期:2014-03-24
• 通讯作者: 李海阳，Tel.：0731-84576316 E-mail：lihaiyang@nudt.edu.cn E-mail:lihaiyang@nudt.edu.cn
• 作者简介:杜昕男，博士研究生。主要研究方向：飞行器轨迹规划与制导。Tel：0731-84576316E-mail：232783682@qq.com；李海阳男，博士，教授，博士生导师。主要研究方向：航天系统分析与仿真。Tel：0731-84576316E-mail：lihaiyang@nudt.edu.cn
• 基金资助:

国家自然科学基金（11372345）；国家“973”计划（2013CB733100）

Skip Reentry Trajectory Optimization Based on Analysis of Path Constraints

DU Xin, LI Haiyang, SHEN Hongxin

1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
• Received:2013-07-08 Revised:2014-03-19 Online:2014-05-25 Published:2014-03-24
• Supported by:

National Natural Science Foundation of China (11372345); National Basic Research Program of China (2013CB733100)

Abstract:

For skip reentry trajectory optimization problem, path constraints (dynamic pressure, overload and heating rate) are often enforced without analysis. Besides, roll angle also needs to be constrained. These make the optimization problem very different to solve. Based on the dynamic feature, skip reentry trajectory is divided into several phases. Characteristic of path constraints and their relationship between each other in each phase are analyzed. Analytic relations of path constraints are formulated. Then, a pipelining enforcement strategy is proposed, which may reduce the number of path constraints. Considering both the global optimality and high-accuracy of solution, a two-step optimization approach based on particle swarm optimization (PSO) algorithm and Gauss pseudospectral method (GPM) is proposed. The results indicate that the proposed optimization approach can obtain high-accuracy optimal solutions which satisfy the constraints, and the proposed pipelining enforcement strategy of path constraints is valid, numerical optimization results accord with theory analytical results.