NSSC OpenIR
Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks
Alternative TitleWOS:000540510300009
Li, Mingtao1; Wang, Yirui1; Wang, Youliang; Zhou, Binghong1; Zheng, Wei
Source PublicationSCIENTIFIC REPORTS
2020
Volume10Issue:1
DOI10.1038/s41598-020-65343-z
ISSN2045-2322
Language英语
KeywordREDIRECT MISSION EARTH OPTIMIZATION SURFACES
AbstractAsteroid impacts pose a major threat to all life on Earth. The age of the dinosaurs was abruptly ended by a 10-km-diameter asteroid. Currently, a nuclear device is the only means of deflecting large Potentially Hazardous Asteroids (PHAs) away from an Earth-impacting trajectory. The Enhanced Kinetic Impactor (EKI) concept is proposed to deflect large PHAs via maneuvering space rocks. First, an unmanned spacecraft is launched to rendezvous with an intermediate Near-Earth Asteroid (NEA). Then, more than one hundred tons of rocks are collected from the NEA as the EKI. The NEA can also be captured as the EKI if the NEA is very small. Finally, the EKI is maneuvered to impact the PHA at a high speed, resulting in a significant deflection of the PHA. For example, to deflect Apophis, as much as 200 t of rocks could be collected from a NEA as the EKI based on existing engineering capabilities. The EKI can produce a velocity increment (v) of 39.81mm/s in Apophis, thereby increasing the minimum geocentric distance during the close encounter in 2029 by 1,866.93km. This mission can be completed in 3.96 years with a propellant cost of 2.98 t. Compared with a classic kinetic impactor, the deflection distance can be increased one order of magnitude. The EKI concept breaks through the limitation of the ground-based launch capability, which can significantly increase the mass of the impactor. We anticipate that our research will be a starting point for efficient planetary defense against large PHAs.
Indexed BySCI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7543
Collection中国科学院国家空间科学中心
Affiliation1.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Mingtao,Wang, Yirui,Wang, Youliang,et al. Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks[J]. SCIENTIFIC REPORTS,2020,10(1).
APA Li, Mingtao,Wang, Yirui,Wang, Youliang,Zhou, Binghong,&Zheng, Wei.(2020).Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks.SCIENTIFIC REPORTS,10(1).
MLA Li, Mingtao,et al."Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks".SCIENTIFIC REPORTS 10.1(2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Mingtao]'s Articles
[Wang, Yirui]'s Articles
[Wang, Youliang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Mingtao]'s Articles
[Wang, Yirui]'s Articles
[Wang, Youliang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Mingtao]'s Articles
[Wang, Yirui]'s Articles
[Wang, Youliang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.