{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/102856"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/102856","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Orbit control for a spacecraft around a splitting contact binary asteroid","abstract":"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.","abstract_html":"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.","abstract_has_math":false,"creators":["Bouvier, Jean-Baptiste"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Aerospace Engineering","degree_department":null,"school":null,"contributors":["Ho, Koki"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-02-07T20:44:28Z","date_published":"2019-02-07T20:44:28Z","updated_at":"2026-07-22T22:24:42Z","subjects":["Orbit control, Adaptive Control, Binary Asteroid, Path Following, Orbital mechanics, Trajectory Tracking"],"languages":["en"],"rights":["Copyright 2018 Jean-Baptiste Bouvier"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/102856","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ho, Koki"]},{"key":"dc:creator","label":"Author","values":["Bouvier, Jean-Baptiste"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-02-07T20:44:28Z","2021-02-08T10:15:29Z","2018-12-11","2018-12"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Aerospace Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Orbit control, Adaptive Control, Binary Asteroid, Path Following, Orbital mechanics, Trajectory Tracking"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2018 Jean-Baptiste Bouvier"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/102856"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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). 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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). 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