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Nearly-grazing optimal trajectories for noncoplanar, aeroassisted orbital transferThis paper discusses aeroassisted orbital transfer maneuvers under the assumption that the terminal orbital inclinations are different. Both GEO-to-LEO and LEO-to-LEO transfers are considered in connection with a spacecraft which is controlled during the atmospheric pass via the angle of attack and the angle of bank. Within the framework of classical optimal control, the following problems are studied: the minimization of the total characteristic velocity (P1); the minimization of the time integral of the square of the path inclination (P5); and the minimization of the peak heating rate (Q1). Numerical solutions are obtained by means of the sequential gradient-restoration logarithm for optimal control problems under the conditions that, for the problem (P1), the plane change components are optimized, while for the problems (P5) and (Q1), the plane change components are kept at the levels determined for problem (P1). The engineering implications of the solutions are discussed, in order to determine the most useful solutions in the light of energy requirements and heat transfer requirements.
Document ID
19880058487
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Miele, A.
(Rice University Houston, TX, United States)
Mease, K. D.
(Princeton University NJ, United States)
Lee, W. Y.
(Rice Univ. Houston, TX, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1988
Publication Information
Publication: Journal of the Astronautical Sciences
Volume: 36
ISSN: 0021-9142
Subject Category
Astrodynamics
Accession Number
88A45714
Funding Number(s)
CONTRACT_GRANT: JPL-956415
Distribution Limits
Public
Copyright
Other

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