Developing Explosion Models for Optimal Fragmentation of a Hazardous Asteroid

Date
2014-04-15
Authors
Harry, Jacob
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Authors
Research Projects
Organizational Units
Aerospace Engineering
Organizational Unit
Journal Issue
Series
Department
Aerospace Engineering
Abstract

Asteroid collisions with the Earth pose a great threat to the safety of populations around the globe. Research into the optimal mitigation of these potential hazards through physical modeling and high-performance computation will help to minimize these threats. Late detection of asteroids yields a small response window, restricting the efficacy of most non-nuclear options. The Asteroid Deflection Research Center has been operating as a NASA Innovative and Advanced Concepts Phase II Project. The center's innovative mission design involves using a two-body spacecraft: a kinetic impactor in the fore body, followed by a nuclear deterrent in the aft body. The fore body will create a crater in the asteroid, allowing significant coupling of the nuclear blast. A National Research Council report on the energy transfer effects of depth on nuclear penetrator weapons indicates a drastic increase in energy coupling with increasing depth. Our preliminary results indicate a maximum efficiency factor of 12 when comparing subsurface versus contact blasts.

Comments
Description
Keywords
Citation
DOI
Source