Journal of Space Science and Experiment >

2021 , Vol. 21 >Issue 4: 45 - 48

DOI: https://doi.org/10.19963/j.cnki.2096-4099.2021.04.007

On Orbit Disposal

A Preliminary Analysis on Intercepting Asteroids by Nuclear Explosion

  • TANG Wen-hui ,
  • ZHANG Kun ,
  • RAN Xian-wen
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  • Department of Physics,College of Liberal Arts and Sciences,National University of Defense Technology,Changsha 410073,China

Online published: 2023-12-11

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Abstract

In this paper we introduce the basic theory of asteroid deflection via standoff nuclear explosion.The simulation model is established involving FEM method and PUFF equation-of-state.In the simulation scenario we display,the diameter of the dense spherical asteroid is 300m and it consists entirely of granite(density is 2.63g/cm3)with a mass of 3.7×1010 kg.The standoff nuclear TNT equivalent is 1 million tons and the X-ray spectrum is 1.5keV.The burst height is set as 1000m and this nuke explosion could produce a 1.4×1010 N·s blow-off impulse,which may generate an 0.38m/s extra speed for the asteroid.Assuming the axial speed of asteroid is 20km/s,this vertical extra speed could lead to a 1.1×10-3degree deflection angle.The results show that the asteroid can be deflected effectively by using a standoff nuclear explosion.In addition,due to many influencing factors,we make an outlook for the follow-up research.

Key words： asteroid; nuclear explosion; numerical simulation; deflection angle

Cite this article

TANG Wen-hui , ZHANG Kun , RAN Xian-wen . A Preliminary Analysis on Intercepting Asteroids by Nuclear Explosion[J]. Journal of Space Science and Experiment, 2021 , 21(4) : 45 -48 . DOI: 10.19963/j.cnki.2096-4099.2021.04.007

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