Technology of bare tether current collection

Estes, Robert D. and Sanmartín Losada, Juan Ramón and Martínez-Sánchez, Manuel (1998). Technology of bare tether current collection. In: "Tether Technology Interchange Meeting", 9-10 sep 1997, Hunstville, Alabama.

Description

Title: Technology of bare tether current collection
Author/s:
  • Estes, Robert D.
  • Sanmartín Losada, Juan Ramón
  • Martínez-Sánchez, Manuel
Item Type: Presentation at Congress or Conference (Article)
Event Title: Tether Technology Interchange Meeting
Event Dates: 9-10 sep 1997
Event Location: Hunstville, Alabama
Title of Book: Tether technology interchange meeting : proceedings
Date: 1998
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

The outstanding problem for useful applications of electrodynamic tethers is obtaining sufficient electron current from the ionospheric plasma. Bare tether collectors, in which the conducting tether itself, left uninsulated over kilometers of its length, acts as the collecting anode, promise to attain currents of 10 A or more from reasonably sized systems. Current collection by a bare tether is also relatively insensitive to drops in electron density, which are regularly encountered on each revolution of an orbit. This makes nighttime operation feasible. We show how the bare tether's high efficiency of current collection and ability to adjust to density variations follow from the orbital motion limited collection law of thin cylinders. We consider both upwardly deployed (power generation mode) and downwardly deployed (reboost mode) tethers, and present results that indicate how bare tether systems would perform as their magnetic and plasma environment varies in low earth orbit.

More information

Item ID: 23477
DC Identifier: http://oa.upm.es/23477/
OAI Identifier: oai:oa.upm.es:23477
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 11 Apr 2014 08:38
Last Modified: 29 Sep 2014 08:11
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