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Systems design of a hybrid sail pole-sitter

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  • Communication
  • Design

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Ceriotti, M., and McInnes, C.R. (2011) Systems design of a hybrid sail pole- sitter. Advances in Space Research, 48 (11). pp. 1754-1762. ISSN 0273- 1177 Copyright © 2011 Elsevier A copy can be downloaded for personal non-commercial research or study, without prior permission or charge Content must not be changed in any way or reproduced in any format or medium without the formal permission of the copyright holder(s) When referring to this work, full bibliographic details must be given http://eprints.gla.ac.uk/65193/ Deposited on: 11 February 2014 Enlighten – Research publications by members of the University of Glasgow http://eprints.gla.ac.uk SYSTEMS DESIGN OF A HYBRID SAIL POLE-SITTER Matteo Ceriotti, Colin R. McInnes Advanced Space Concepts Laboratory, Department of Mechanical Engineering University of Strathclyde, Glasgow G1 1XJ, United Kingdom [email protected], [email protected] ABSTRACT This paper presents the preliminary systems design of a pole-sitter. This is a spacecraft that hovers over an Earth pole, creating a platform for full hemispheric observation of the polar regions, as well as direct-link telecommunications. To provide the necessary thrust, a hybrid propulsion system combines a solar sail with a more mature solar electric propulsion (SEP) thruster. Previous work by the authors showed that the combination of the two allows lower propellant mass fractions, at the cost of increased system complexity. This paper compares the pure SEP spacecraft with the hybrid spacecraft in terms of the launch mass necessary to deliver a certain payload for a given mission duration. A mass budget is proposed, and the conditions investigated under which the hybrid sail saves on the initial spacecraft initial mass. It is found that the hybrid spacecraft with near- to mid-term sail technology has a lower initial mass than the

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