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Title:Neighboring Optimal Feedback Control for Trajectories Found by Collocation and Nonlinear Programming
Author(s):Chen, Jyun-Jye Felipe
Doctoral Committee Chair(s):Conway, Bruce A.
Department / Program:Aerospace Engineering
Discipline:Aerospace Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Mechanical
Abstract:On August 9, 1995, because of a launch vehicle failure the Koreasat 1 satellite was placed into an orbit that was 3,400 nautical miles (6,351 km) lower than the planned geostationary transfer orbit. The Lockheed-Martin company rescue team performed a plan which did put the satellite on station but which consumed about half of the satellite's attitude control and station keeping fuel supply. However the sequence of maneuvers which was used to put the satellite on-station was not determined optimally. In this work it is shown how much fuel might have been saved in this case if the satellite rescue had employed optimal control theory. An optimal solution is found using the DCNLP method and incorporating the most important operational constraints.
Issue Date:1997
Description:147 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997.
Other Identifier(s):(MiAaPQ)AAI9717260
Date Available in IDEALS:2015-09-25
Date Deposited:1997

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