2026-09-21T04:51:42Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/44435 2023-07-11 col_2142_14800 col_2142_5131 com_2142_14799 com_2142_234 com_2142_5130

Conway, Bruce A. Stanley, Aishwarya 2013-05-24T22:16:05Z 2013-05-24T22:16:05Z 2015-05-24T10:00:54Z 2013-05 2013-05-24T22:16:05Z 2013-05 The goal of this thesis is to identify potential Near-Earth Asteroids (NEAs) that are viable candidates for human exploration. The computational method incorporated to help identify these targets is the particle swarm optimization (PSO) technique, a metaheuristic swarming algorithm. The optimizer that was developed minimizes the total mission delta-V, given a particular epoch date, whilst optimizing four time parameters, namely, the ideal time to launch from Earth, the outbound flight time from Earth to an asteroid, the stay time at the asteroid and the inbound flight time from the asteroid to Earth. Studies have been done to identify NEAs suitable for human exploration. However, such studies involved the computation of millions of combinations of launch dates, flight times and wait times at an asteroid in order to determine the specific combination that yields the lowest cost, i.e. the lowest delta-V value. The use of PSO eliminates the need to take such a ‘brute-force’ approach and offers a less-cumbersome way of solving the problem and is computationally inexpensive. The optimizer was applied to NEAs representing all three asteroid belts and identified 365 day (or less) round trip missions which can be accomplished with modest and reasonable delta-V values. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2013-04-22T12:45:44Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Stanley_Aishwarya.pdf: 866721 bytes, checksum: 83625589f72c6faae4fcd84e3925d556 (MD5) Made available in DSpace on 2013-05-24T22:16:05Z (GMT). No. of bitstreams: 2 Aishwarya_Stanley.pdf: 866721 bytes, checksum: 83625589f72c6faae4fcd84e3925d556 (MD5) license.txt: 4067 bytes, checksum: bbd2dbffda25f3cab70f9a99965ec23c (MD5) Restriction data tranferred 2014-07-01T11:36:09-05:00 Original Data Group with Access UIUC Users [automated] Release Date: 2015-05-24 17:18:31 UTC Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Seth Robbins (srobbins@illinois.edu) on 2013-05-24T22:18:51Z Item is restricted until 2015-05-24T22:18:31Z U of I Only Restriction Lifted for Item 44408 on 2015-05-24T10:00:54Z. http://hdl.handle.net/2142/44435 en Copyright 2013 Aishwarya Stanley Near-Earth Asteroids Particle Swarm Optimization Identifying near-earth asteroid targets for human exploration using particle swarm optimization text Aerospace Engineering 1615 Aerospace Engineering 4048 University of Illinois at Urbana-Champaign Thesis M.S. MS: Aerospace Engr -UIUC 10KS4048MS