Neighboring Optimal Feedback Control for Trajectories Found by Collocation and Nonlinear Programming

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Aerospace Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Chen, Jyun-Jye Felipe

Contributors dc:contributor

• Conway, Bruce A.

• Engineering, Mechanical

Language dc:language

eng

Identifier

(MiAaPQ)AAI9717260

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/85122