Spherical collectors versus bare tethers for drag, thrust, and power generation

Sanmartín Losada, Juan Ramón and Charro, Mario and Lorenzini, Enrico C. (2005). Spherical collectors versus bare tethers for drag, thrust, and power generation. In: "9th Spacecraft Charging Technology Conference", 4-8 apr 2005, Tsukuba, Japón.

Description

Title: Spherical collectors versus bare tethers for drag, thrust, and power generation
Author/s:
  • Sanmartín Losada, Juan Ramón
  • Charro, Mario
  • Lorenzini, Enrico C.
Item Type: Presentation at Congress or Conference (Article)
Event Title: 9th Spacecraft Charging Technology Conference
Event Dates: 4-8 apr 2005
Event Location: Tsukuba, Japón
Title of Book: 9th Spacecraft Charging Technology Conference
Date: 2005
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Performances of ED-tethers using either spherical collectors or bare tethers for drag, thrust, or power generation, are compared. The standard Parker-Murphy model of current to a full sphere, with neither space-charge nor plasmamotion effects considered, but modified to best fit TSS1R results, is used (the Lam, Al'pert/Gurevich space-charge limited model will be used elsewhere) In the analysis, the spherical collector is assumed to collect current well beyond its random-current value (thick-heath). Both average current in the bare-tether and current to the sphere are normalized with the short-circuit current in the absence of applied power, allowing a comparison of performances for all three applications in terms of characteristic dimensionless numbers. The sphere is always substantially outperformed by the bare-tether if ohmic effects are weak, though its performance improves as such effects increase.

More information

Item ID: 25745
DC Identifier: http://oa.upm.es/25745/
OAI Identifier: oai:oa.upm.es:25745
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 07 May 2014 09:59
Last Modified: 30 Sep 2014 12:24
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