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Realistic Earth escape strategies for solar sailing

Macdonald, M. and McInnes, C.R. (2005) Realistic Earth escape strategies for solar sailing. Journal of Guidance, Control and Dynamics, 28 (2). pp. 315-323. ISSN 0731-5090

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Abstract

With growing interest in solar sailing comes the requirement to provide a basis for future detailed planetary escape mission analysis by drawing together prior work, clarifying and explaining previously anomalies. Previously unexplained seasonal variations in sail escape times from Earth orbit are explained analytically and corroborated within a numerical trajectory model. Blended-sail control algorithms, explicitly independent of time, which provide near-optimal escape trajectories and maintain a safe minimum altitude and which are suitable as a potential autonomous onboard controller, are then presented. These algorithms are investigated from a range of initial conditions and are shown to maintain the optimality previously demonstrated by the use of a single-energy gain control law but without the risk of planetary collision. Finally, it is shown that the minimum sail characteristic acceleration required for escape from a polar orbit without traversing the Earth shadow cone increases exponentially as initial altitude is decreased.

Item type: Article
ID code: 6252
Keywords: solar sailing, solar sails, propulsion, space travel, guidance systems, Mechanical engineering and machinery, Motor vehicles. Aeronautics. Astronautics, Applied Mathematics, Control and Systems Engineering, Electrical and Electronic Engineering, Space and Planetary Science, Aerospace Engineering
Subjects: Technology > Mechanical engineering and machinery
Technology > Motor vehicles. Aeronautics. Astronautics
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Depositing user: Strathprints Administrator
Date Deposited: 13 Jun 2008
Last modified: 18 Jun 2015 06:34
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/6252

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