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GeoSail: exploring the geomagnetic tail using a small solar sail

McInnes, C.R. and Macdonald, M. and Angelopoulos, V. and Alexander, D. (2001) GeoSail: exploring the geomagnetic tail using a small solar sail. Journal of Spacecraft and Rockets, 38 (4). pp. 622-629. ISSN 0022-4650

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Abstract

Conventional geomagnetic tail missions require a spacecraft to be injected into a long elliptical orbit to explore the spatial structure of the geomagnetic tail. However, because the elliptical orbit is inertially fixed and the geomagnetic tail is directed along the sun-Earth line, the apse line of the elliptical orbit is precisely aligned with the geomagnetic tail only once every year. To artificially precess the apse line of the elliptical orbit in a sun-synchronous manner, which would keep the spacecraft in the geomagnetic tail during the entire year, would require continuous low-thrust propulsion or periodic impulses from a high-thrust propulsion system. Both of these options require reaction mass that will ultimately limit the mission lifetime. It is demonstrated that sun-synchronous apse-line precession can be achieved using only a small, low-cost solar sail. Because solar sails do not require reaction mass, a geomagnetic tail mission can be configured that provides a continuous science return by permanently stationing a science payload within the geomagnetic tail.

Item type: Article
ID code: 5717
Keywords: geomagnetic tail, elliptical orbit, apse line, mechanical enigneering, Mechanical engineering and machinery, Motor vehicles. Aeronautics. Astronautics, 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
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 30 Mar 2008
    Last modified: 04 Sep 2014 14:40
    URI: http://strathprints.strath.ac.uk/id/eprint/5717

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