Skip reentry trajectory optimization based on analysis of path constraints

被引：0
作者：
Du, Xin [1 ]
Li, Haiyang [1 ]
Shen, Hongxin [1 ]
机构：
[1] College of Aerospace Science and Engineering, National University of Defense Technology
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2014年 / 35卷 / 05期
关键词：
Path constraints; Pipelining enforcement strategy; Skip reentry; Trajectory optimization; Two-level optimization strategy;
D O I：
10.7527/S1000-6893.2014.0025
中图分类号：
学科分类号：
摘要：
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.
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页码：1265 / 1275
页数：10
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