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首页> 外文期刊>Planetary and space science >Vertical controlled landing on 67P / Churyumov-Gerasimenko
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Vertical controlled landing on 67P / Churyumov-Gerasimenko

机译：67P / Churyumov-Gerasimenko的垂直受控着陆

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摘要

With the increasing interest of small body science due to its important role in the puzzle of the solar system formation, missions to small bodies are studied and developed in preparation for future exploration. Together with the operational experience gained and the general rapid technology development, landers and surface mobility elements enable more and more an enhancement of the scientific mission return by collecting in-situ measurements or samples of the surface. Hence, the descent and landing operations become a vital part in a successful execution of the mission.In this paper, a descent strategy for a vertical landing on small bodies is presented. A controlled descent and landing sequence is proposed as opposed to ballistic descents used in previous small body landers (Ulamec and Biele, 2009). The analysis aims for a generic investigation of the surface accessibility of a small body on the example of the comet 67P/Chutyumov-Gerasimenko. A vertical controlled descent trajectory concept is proposed and applied to all surface facets of the downscaled ESA polyhedron shape model (released in 2015 (ESA, 2015)). The trajectories are assessed by their duration of descent, Av need and their surface accessibility with respect to safety distances to the surface and the canyon walls.The analysis results in Delta nu need ranges between Delta nu(min) = 0.7 m s(-1) and Delta nu(max) = 3.1 m s(-1), the duration of descent between t(min) = 65 min and t(max) = 275 min. If a minimum distance of 175 m to the canyon surface or walls is considered as safe, 90% of the comet's surface is accessible with the described implemented strategy.
机译：由于在太阳能系统地层难题中的重要作用，小体科学的兴趣日益越来越大，研究并开发了小型机构的任务，为未来的勘探做准备。与所获得的操作经验以及一般的快速技术开发，着陆器和表面移动元件通过收集原位测量或表面样品来实现越来越多的增强科学任务返回。因此，下降和着陆业务在成功执行任务中成为一个重要的部分。在本文中，提出了一种对小型身体垂直着陆的下降策略。提出了一种受控的下降和着陆序列，而不是在以前的小体载机（Ulamec和Biele，2009）中使用的弹道地水。分析旨在对彗星67p / chutyumov-gerasimenko的例子进行一般调查小体的表面可达性。提出了一种垂直受控的下降轨迹概念并应用于较透勘测ESA多面体形状模型的所有表面刻面（2015年发布（ESA，2015））。轨迹通过其血液持续，AV需要及其表面可访问性而评估，以及对表面和峡谷墙的安全距离的评估。分析结果在Delta nu（min）= 0.7ms（-1）之间的Δnu需要范围和Delta nu（max）= 3.1 ms（-1），t（min）= 65 min和t（max）= 275 min之间的持续时间。如果峡谷表面或墙壁的最小距离被认为是安全的，则可以通过所描述的实施策略访问90％的彗星表面。

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  • 来源
    《Planetary and space science》 |2020年第11期|87-96|共10页
  • 作者

    Probst A.; San Martin A.; Zimmer A.; Broschart S.; Forstner R.;

  • 作者单位

    Bundeswehr Univ Munich Werner Heisenberg Weg 39 D-85579 Neubiberg Germany|CALTECH NASA Jet Prop Lab 4800 Oak Grove Dr Pasadena CA 91109 USA;

    CALTECH NASA Jet Prop Lab 4800 Oak Grove Dr Pasadena CA 91109 USA;

    CALTECH NASA Jet Prop Lab 4800 Oak Grove Dr Pasadena CA 91109 USA;

    CALTECH NASA Jet Prop Lab 4800 Oak Grove Dr Pasadena CA 91109 USA;

    Bundeswehr Univ Munich Werner Heisenberg Weg 39 D-85579 Neubiberg Germany;

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  • 正文语种 eng
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  • 关键词

    Small bodies; Comets; CG67P; GNC; Vertical controlled landing, Asteroids;

    机译：小尸体;彗星;CG67P;GNC;垂直受控着陆;小行星;

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