Analysis of thermionic bare tether operation regimes in passive mode

Sanmartín Losada, Juan Ramón and Chen, Xin and Sánchez Arriaga, Gonzalo (2016). Analysis of thermionic bare tether operation regimes in passive mode. In: "14th Spacecraft Charging Technology Conference", 4-8 Abr, Noordwijk, Netherlands.

Description

Title: Analysis of thermionic bare tether operation regimes in passive mode
Author/s:
  • Sanmartín Losada, Juan Ramón
  • Chen, Xin
  • Sánchez Arriaga, Gonzalo
Item Type: Presentation at Congress or Conference (Article)
Event Title: 14th Spacecraft Charging Technology Conference
Event Dates: 4-8 Abr
Event Location: Noordwijk, Netherlands
Title of Book: 14th Spacecraft Charging Technology Conference
Date: April 2016
Subjects:
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Física Aplicada a las Ingenierías Aeronáutica y Naval
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A Thermionic Bare Tether (TBT) is a long conductor coated with a low work function material. Under drag mode, a tether segment extending from anodic end A to a zero-bias point B, with standard Orbital-motion-limited current collection and ohmic effects, is followed by a complex cathodic segment. In general, as bias becomes more negative in moving from B to cathodic end C, one first finds space-charge-limited emission covering up to some intermediate point B*, then full Richardson-Dushman emission reaching from B* to end C. An approximate analytical study, which combines current and voltage profile equations with results from asymptotic studies of the Vlasov-Poisson system for emissive probes. is carried out to determine the parameter domain covering two limit regimes. In one such regime no point B* is reached and thus no full R-D emission develops. In an opposite limit regime, segment BB* is too short to contribute significantly to current balance.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainRYC-2014-15357UnspecifiedUnspecifiedUnspecified

More information

Item ID: 43361
DC Identifier: http://oa.upm.es/43361/
OAI Identifier: oai:oa.upm.es:43361
Official URL: http://esaconferencebureau.com/2016-events/14sctc
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 22 Sep 2016 11:50
Last Modified: 22 Sep 2016 11:50
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