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论文:2012,Vol:30,Issue(4):491-496 |
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引用本文： |
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侯艳伟, 岳晓奎, 张莹. 基于脉冲机动的引力辅助深空探测轨道设计[J]. 西北工业大学 |
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Hou Yanwei, Yue Xiaokui, Zhang Ying. Design of Gravity-Assist Trajectory Based Impulsive Maneuver[J]. Northwestern polytechnical university |
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| 基于脉冲机动的引力辅助深空探测轨道设计 |
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| 侯艳伟, 岳晓奎, 张莹 |
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| 西北工业大学 航天学院,陕西 西安 710072 |
| 摘要: |
| 以借助金星引力的火星探测器轨道设计为背景,针对借力前后可能存在的速度不匹配问题,提出了一种施加脉冲机动的解决方式。首先以借力飞行的基本理论为基础,推导了施加脉冲的实现过程。其次,探讨了基于等高线图的引力辅助轨道设计方法,当速度不匹配时,不存在无动力的借力飞行,针对可能发生的速度不匹配的情况,文章采用在引力辅助过程完成之后,施加脉冲,提高探测器的速度,实现了速度不匹配的借力飞行情况。最后研究了遗传算法在引力辅助轨道设计中的应用,以金星借力的火星探测轨道为例,同样在无动力的引力辅助不满足要求的情况下,研究了基于遗传算法的引力辅助轨道优化设计流程,得出与等高线图法基本一致的结果。对两种方法的结果进行比较分析,验证了施加脉冲机动的方法在引力辅助轨道设计中的适用性。 |
| 关键词:
引力辅助
遗传算法
脉冲机动
等高线图
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| Design of Gravity-Assist Trajectory Based Impulsive Maneuver |
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| Hou Yanwei, Yue Xiaokui, Zhang Ying |
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| College of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| he introduction of the full paper discusses a number of papers in the open literature and then proposesthe design mentioned in the title. Sections 1 through 3 explain our design，whose core consists of:“First，how themethod should be applied has been illustrated based on the theory of gravity-assist. Then，we discuss how gravity-assist trajectory was designed with contour chart. When the velocity is unmatched，we cannot get unpowered gravi-ty-assist. In the solution in this paper，impulse was put on after the gravity-assist process to increase the velocity ofthe spacecraft to solve the problem. Moreover，the application of Genetic Algorithm (GA) in gravity-assist trajecto-ry design was studied with Mars exploration trajectory with gravity-assist from Venus. Similarly，in unpowered caseswhen the gravity-assist was unavailable，we discuss the process of gravity-assist trajectory design and optimizationwith GA. The outcomes of the two methods, with GA or contour chart, are similar. We compare and analyze the re-sults obtained by these two methods，checking the applicability of the method of using impulsive maneuver to solvethe unmatched problem in velocity in gravity-assist trajectories design. "The preliminary conclusion of our design(last paragraph of section 4) is: the proposed method in this paper can obtain the design of gravity assist trajectorywhen the escaping velocity from the Earth is small，and it can be implemented easily in engineering. |
| Key words:
design
equations of motion
errors
genetic algorithms
numerical methods
optimization
three di-mensional
trajectories;contour chart
gravity assist
impulsive maneuver
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| 收稿日期: 2011-10-08
修回日期:
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| DOI: |
| 通讯作者:
Email： |
| 作者简介: 侯艳伟(1986-),西北工业大学硕士研究生,主要从事深空探测的轨道设计与优化研究。
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| 侯艳伟 在本刊中的所有文章 |
| 岳晓奎 在本刊中的所有文章 |
| 张莹 在本刊中的所有文章 |
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参考文献: |
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[7] 张旭辉, 刘竹生. 火星探测无动力借力飞行轨道研究. 宇航学报, 2008, 29(6): 1739-1746Zhang Xuhui，Liu Zhusheng. Unpowered Swing-By Flight Orbit Design for Mars Exploration. Journal of Astronautics, 2008, 29(6):1739-1746 (in Chinese)
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