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Chip-scale spacecraft swarms: Dynamics, control, and exploration.

机译:芯片级飞船群:动力学,控制和探索。

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摘要

Chip-scale spacecraft (chipsats) swarms will open new avenues for space exploration, both near Earth and in interplanetary space. The ability to create distributed sensor networks through swarms of low-cost, low-mass spacecraft shall enable the exploration of asteroids, icy moons, and the Earths magnetosphere become more feasible. This research develops new techniques for analyzing swarm dynamics, both in the limited case of the Kepler problem, and in general gravity environments, investigates several techniques for providing chipsat propulsion, and develops possible mission strategies.;This work applies the Kustaanheimo-Stiefel (KS) transformation to the stochastic exploration presented by chipsat swarms. The contributions towards understanding swarm dynamics include analytical and numerical study of swarms in the purely Kepler problem as well as in general potential fields. A study of swarm evolution near an asteroid provides an example of the richness of behaviors that can be provided by chip-scale spacecraft swarms.;Swarm actuation can be achieved through a number of means. This research presents a novel attitude control and propulsion system for chipsat swarms near Earth using a mutliple electrodynamic tethers. A numerical study of tether configurations for the greatest control authority is also presented. In addition, active solar sails are evaluated for swarm actuation beyond Earth, and a visualization of available control authority is presented.;An example mission of swarm deployment near the Earth-Moon Lagrange point highlights the utility of swarm-based exploration. The candidate mission shows that a swarm with minimal actuation and a simple control scheme might provide distributed sensors in the region for a year or more, or dissipate quickly if uncontrolled. Such a chip-spacecraft mission would be a valuable precursor to further space development in these regions.
机译:芯片级航天器(chipsats)群将为地球附近和行星际空间中的太空探索开辟新的途径。通过低成本,低质量的航天器群建立分布式传感器网络的能力将使对小行星,冰月卫星的探索变得更可行。这项研究开发了在开普勒问题的有限情况下以及在一般重力环境下用于分析群动力学的新技术,研究了几种用于提供切屑推进的技术,并制定了可能的任务策略。;这项工作应用了Kustaan​​heimo-Stiefel(KS )转换为Chipat群所提出的随机探索。对理解群体动力学的贡献包括对纯粹开普勒问题以及一般潜在领域中的群体的分析和数值研究。对小行星附近群进化的研究提供了芯片级航天器群可以提供的丰富行为的实例。可以通过多种方法来实现群驱动。这项研究提出了一种新颖的姿态控制和推进系统,该系统利用多动电动系链为地球附近的炸弹群提供动力。还对最大控制权限的系链配置进行了数值研究。此外,对活跃的太阳帆进行了地球以外的群体致动的评估,并给出了可用控制权的可视化。;在地球-月亮拉格朗日点附近的群体部署的示例任务突出了基于群体的勘探的实用性。候选任务表明,具有最小促动力和简单控制方案的蜂群可能会在该地区提供分布式传感器一年或更长时间,或者如果不受控制,则会很快消散。这种飞船飞行任务将是这些地区进一步发展空间的宝贵先驱。

著录项

  • 作者

    Weis, Lorraine.;

  • 作者单位

    Cornell University.;

  • 授予单位 Cornell University.;
  • 学科 Aerospace engineering.
  • 学位 Ph.D.
  • 年度 2016
  • 页码 110 p.
  • 总页数 110
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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