...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta astronautica >A concept of hazardous NEO detection and impact warning system
【24h】

A concept of hazardous NEO detection and impact warning system

机译：危险NEO检测和冲击警告系统的概念

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In 2013, the well-known Chelyabinsk meteor entered the Earth's atmosphere over Chelyabinsk, Russia. It is estimated that the meteor exploded at altitude near 30 km, which damaged thousands of buildings and injured a thousand of residents. The estimated size of the meteor is approximately 20 m. Because the meteor approached to Earth from Sun direction, no ground-based observatories could not detect until the impact.Considering such situations, the paper proposes a concept to detect Chelyabinsk-class small Near-Earth Objects. The concept addresses a "last-minute" warning system of NEO impact, in the same manner of "Tsunami" warning.To achieve the mission objective, two locations are assumed for the space telescope installation point i.e., Sun-Earth Lagrange point 1, SELL and Artificial Equilibrium Point, AEP. SELL is one of the natural equilibrium points, on the other hand, AEP is artificially equilibrated point by Sun and Earth gravity, centrifugal force and low-thrust acceleration. The magnitude of the acceleration to keep AEP is sufficiently small near 1 au radius orbit around the Sun i.e., the order of mu m/s(2) which can be achieved by solar sail. Through some cases of numerical simulations considering the size of NEOs and detector capability, this paper will show the feasibility of the proposed concept.
机译：2013年，众所周知的Chelyabinsk Meteor进入了俄罗斯Chelyabinsk的地球大气层。据估计，流星在30公里附近的海拔地区爆炸，这损坏了成千上万的建筑物并受伤了成千上万的居民。估计的流星尺寸约为20米。由于流星从太阳方向接近地球，因此在影响下，没有基于基于地面的观察者无法检测到这种情况，提出了一种检测Chelyabinsk级小近地球对象的概念。该概念以“海啸”警告的方式解决了Neo Impact的“最后一分钟”警告系统。要实现任务目标，假设空间望远镜安装点的两个位置，即Sun-Bard Lagrange 1，销售和人工均衡点，AEP。卖出是天然均衡点之一，另一方面，AEP是由太阳和地球重力，离心力和低推力加速的人为平衡点。保持AEP的加速度的大小是太阳围绕太阳围绕的近1个Au半径轨道的近1个Au半径轨道。，Mu M / s（2）的顺序可以通过太阳帆实现。通过考虑到Neos和探测器能力的大小的数值模拟的一些情况，本文将展示所提出的概念的可行性。

著录项

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