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Descripción
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| Outer planet exploration has always been handicapped by a scarcity of power. The conversion of solar energy to electricity becomes rapidly ineffective further from the Sun. Solar intensity at Jupiter, the nearest of the outer planets, is only 4% of its value at Earth. For a mission to Jupiter any extra power will allow the use of in- struments which normally cannot be deployed in space because they need too much energy. Electrodynamic tethers could be used in some missions as an alternative to produce required levels of onboard energy. This paper describes the essential dy- namical issues arising in the placement of a permanent observatory located at one of the Jupiter inner moonlets (Adrastea, Metis, Amalthea, Thebe) and sustained by an electrodynamic tether working in the generator regime. The electrodynamic tether will be deorbiting the moonlet by using its gravitational attraction; in doing so it converts the mechanical energy of the moonlet into electrical energy that can be used onboard. The aim of the work is to analyze the dynamical problem posed by such a observatory ¿orbital and attitude dynamics¿ and also essential aspects related with its control. A feedback control law is deduced; it allows to control and stabilize the system when is operated at unstable equilibrium positions. | |
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Internacional
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Si |
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Nombre congreso
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2007 AAS/AIAA Astrodynamics Specialist Conference and Exhibit |
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Tipo de participación
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960 |
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Lugar del congreso
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Mackinac Island, Michigan (USA) |
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Revisores
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ISBN o ISSN
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DOI
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Fecha inicio congreso
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19/08/2007 |
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Fecha fin congreso
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23/08/2007 |
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