2026-09-20T17:11:45Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/102856 2023-07-11 col_2142_5131 col_2142_14800 com_2142_5130 com_2142_14799 com_2142_234

Ho, Koki Bouvier, Jean-Baptiste 2019-02-07T20:44:28Z 2019-02-07T20:44:28Z 2021-02-08T10:15:29Z 2018-12-11 2018-12 This thesis examines an orbit control problem for a spacecraft around a contact binary asteroid considering the dynamics of both the spacecraft and the asteroid itself. It is known that approximately 15\% of the near-Earth asteroids are binary, and among these the fraction of contact binaries is between 6 and 10%. Most contact binary asteroids are constituted of an agglomeration of smaller boulders maintained together due to their internal gravity, which is a relatively unstable configuration. Therefore, even a minor change in their mass distribution, like would be caused by the landing of mining machines, can result in a modification of the asteroid's structure including a landslide or a splitting. Particularly, separation of the asteroid into two parts is problematic in terms of orbit control, because of the consequences on the gravitational field of the asteroid. Traditional two-body orbital control methods cannot be applied to the missions to those asteroids because they do not consider the dynamic activities of the asteroids themselves. This thesis proposes and evaluates a control method to follow a predefined path under unknown states of the splitting binary asteroid. Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2020-12-01 The student, Jean-Baptiste Bouvier, accepted the attached license on 2018-12-10 at 21:54. The student, Jean-Baptiste Bouvier, submitted this Thesis for approval on 2018-12-10 at 22:00. This Thesis was approved for publication on 2018-12-11 at 14:05. DSpace SAF Submission Ingestion Package generated from Vireo submission #13283 on 2019-02-07 at 14:23:24 Made available in DSpace on 2019-02-07T20:44:28Z (GMT). No. of bitstreams: 2 BOUVIER-THESIS-2018.pdf: 3205811 bytes, checksum: 7af61d4480bbfae9fa129b3aeafdfb91 (MD5) LICENSE.txt: 4218 bytes, checksum: e031a4ddb87ae2aa7fe00a4b060c610a (MD5) Previous issue date: 2018-12-11 Embargo set by: Seth Robbins for item 109882 Lift date: 2021-02-07T20:44:35Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system U of I Only Restriction Lifted for Item 109882 on 2021-02-08T10:15:29Z. application/pdf http://hdl.handle.net/2142/102856 en Copyright 2018 Jean-Baptiste Bouvier Orbit control, Adaptive Control, Binary Asteroid, Path Following, Orbital mechanics, Trajectory Tracking Orbit control for a spacecraft around a splitting contact binary asteroid text text Aerospace Engineering Aerospace Engineering University of Illinois at Urbana-Champaign Thesis M.S.