...
首页> 外文期刊>Acta astronautica >Physical properties of Near-Earth Objects that inform mitigation
【24h】

Physical properties of Near-Earth Objects that inform mitigation

机译:有助于缓解的近地物体的物理特性

获取原文
获取原文并翻译 | 示例
           

摘要

Various methods have been proposed to avoid the collision of a Near-Earth Object (NEO) with the Earth. Each of these methods relies on a mitigation concept (deflection or fragmentation), an energy source (e.g. kinetic, gravitational, solar, thermal, etc.) and a mode of approach (e.g. remote station and interaction). The efficiency of each method depends on the physical properties of the considered NEO that influence the way the body will respond to the considered energy source. While the knowledge of properties such as the mass, spin rate and obliquity as well as the shape is generally required for all mitigation methods, there are other properties that are important to know for some methods and that have no great influence for other ones. This paper summarizes the current knowledge of main physical properties of NEOs and their importance for the most usual mitigation strategies that have been proposed, i.e. the kinetic impactor, the gravity tractor, strategies based on anchoring or depositing material on the surface, and strategies aimed at modifying the thermal properties of the NEO in order to either modify or cancel the Yarkovsky effect, or cause surface vaporization.
机译:已经提出了各种方法来避免近地物体(NEO)与地球的碰撞。这些方法中的每一种都依赖于缓解概念(偏转或破碎),能源(例如动力,引力,太阳能,热力等)和进近方式(例如远程站和交互作用)。每种方法的效率取决于所考虑的NEO的物理特性,这些物理特性会影响人体对所考虑的能源做出响应的方式。尽管所有缓解方法通常都需要了解质量,旋转速率,倾斜度和形状等属性,但对于某些方法,还需要了解其他重要属性,而对于其他方法则没有太大影响。本文总结了近地物体的主要物理特性的当前知识,以及它们对于已提出的最常用的缓解策略的重要性,例如,动力学冲击器,重力拖拉机,基于在表面锚固或沉积材料的策略以及旨在解决这些问题的策略。修改NEO的热特性,以修改或消除Yarkovsky效应,或引起表面汽化。

著录项

  • 来源
    《Acta astronautica》 |2013年第1期|6-13|共8页
  • 作者

    P.Michel;

  • 作者单位

    Lagrange Laboratory, University of Nice-Sophia Antipolis, CNRS, Cote d'Azur Observatory, B.P. 4229, 06304 Nice Cedex 4, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Near-Earth Objects; Asteroids; Impacts; Mitigation;

    机译:近地天体;小行星;影响;缓解;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号