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dc.creatorLee, Woon Yung
dc.date.accessioned 2007-05-09T17:58:43Z
dc.date.available 2007-05-09T17:58:43Z
dc.date.issued 1987
dc.identifier.citation Lee, Woon Yung. "OPTIMAL TRAJECTORIES FOR AEROASSISTED, NONCOPLANAR ORBITAL TRANSFER." (1987) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13230.
dc.identifier.urihttps://hdl.handle.net/1911/13230
dc.description.abstract This thesis considers both classical and minimax problems of optimal control arising in the study of noncoplanar, aeroassisted orbital transfer. The maneuver considered involves the transfer from a high planetary orbit to a low planetary orbit with a prescribed atmospheric plane change. With reference to the atmospheric part of the maneuver, trajectory control is achieved by modulating the lift coefficient and the angle of bank. The presence of upper and lower bounds on the lift coefficient is considered. Within the framework of classical optimal control, the performance indexes studied are the energy required for orbital transfer and the time integral of the square of the path inclination. Within the framework of minimax optimal control, the performance index studied is the peak heating rate. Numerical solutions are obtained by means of the sequential gradient-restoration algorithm for optimal control problems. Numerical examples are presented, and their engineering implications are discussed.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectAerospace engineering
dc.title OPTIMAL TRAJECTORIES FOR AEROASSISTED, NONCOPLANAR ORBITAL TRANSFER
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Mechanical Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science


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