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Descripción
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| A bare tether with thin-tape cross section is both i) the most effective electrodinamic tether for given length and mass, and ii) capable of effective design for an arbitrary mission through its three disparate dimensions. It handily beats the fully insulated tether that exchanges current at both ends, a result resting in advantages of 2D current collection as against 3D collection; it has much greater perimeter than the round bare tether and much lower fatal debris-impact rate, leading to greatly faster de-orbiting and greatly higher probability of survival; and it only allows multi-line tethers reaching a few hundred lines to stand competitive. In selecting the disparate values of length L, width w, and thickness h for a de-orbit mission, performance involves three criteria: a) tether-to- spacecraft mass ratio must be small; b) probability of survival against the debris environment must be high; and c) de-orbiting must be fast to reduce manoeuvres for avoiding catastrophic collisions with big active/passive satellites around. Beyond determining tether mass through the product Lwh, main dimension parameters affecting performance are L/h2/3 characterizing ohmic effects, and w determining electron collection. An algorithm for optimal selection of tape dimensions is elaborated. | |
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Internacional
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Si |
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Nombre congreso
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13th international Spacecraft Charging Technology Conference |
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Tipo de participación
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960 |
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Lugar del congreso
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Pasadena, USA |
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Revisores
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Si |
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ISBN o ISSN
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11-1111-111-1 |
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DOI
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Fecha inicio congreso
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23/06/2014 |
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Fecha fin congreso
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27/06/2014 |
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1 |
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1 |
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Título de las actas
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13th Spacecraft Charging Technology Conference, |