Advanced mission planning and impact risk assessment of near-Earth asteroids in application to planetary defense

dc.contributor.advisor Bong Wie
dc.contributor.author Vardaxis, George
dc.contributor.department Aerospace Engineering
dc.date 2018-08-11T06:33:25.000
dc.date.accessioned 2020-06-30T02:56:56Z
dc.date.available 2020-06-30T02:56:56Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2015
dc.date.embargo 2001-01-01
dc.date.issued 2015-01-01
dc.description.abstract <p>In this work, an integrated utilization of analytic keyhole theory, B-plane mapping, and planetary encounter geometry, augmented by direct numerical simulation, is shown to be useful in determining the impact risk of an asteroid with the Earth on a given encounter, as well as the potential for future encounters. The accurate estimation of the impact probability of hazardous asteroids is extremely important for planetary defense mission planning. Asteroids in Earth resonant orbits are particularly troublesome because of the continuous threat they pose in the future. Based on the trajectories of the asteroid and the Earth, feasible mission trajectories can be found to mitigate the impact threat of hazardous asteroids. In order to try to ensure mission success, trajectories are judged based on initial and final parameters that would make the mission easier to complete. Expanding upon the established theory, a computational method is developed to estimate the impact probability of the hazardous asteroid, in order to assess the likelihood of an event, and then investigate the fragmentation of the asteroid due to a disruption mission and analyze its effects on the current and future encounters of the fragments with Earth.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/14468/
dc.identifier.articleid 5475
dc.identifier.contextkey 7936159
dc.identifier.doi https://doi.org/10.31274/etd-180810-4019
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/14468
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/28653
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/14468/Vardaxis_iastate_0097E_14926.pdf|||Fri Jan 14 20:20:41 UTC 2022
dc.subject.disciplines Aerospace Engineering
dc.subject.keywords Aerospace Engineering
dc.subject.keywords Impact Risk Assessment
dc.subject.keywords Mission Design
dc.subject.keywords Near-Earth Asteroids
dc.subject.keywords Planetary Defense
dc.subject.keywords Trajectory
dc.title Advanced mission planning and impact risk assessment of near-Earth asteroids in application to planetary defense
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
File
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Vardaxis_iastate_0097E_14926.pdf
Size:
16.77 MB
Format:
Adobe Portable Document Format
Description: