Hemispherical Measurements of the SPT - 140 Plume

The results of a 3-dimensional hemispherical Faraday probe rake assembly are investigated. Such a system is attractive because it allows measurement of current density at multiple locations simultaneously, and can be used to detect asymmetry in the Hall Effect thruster (HET) beam. For ease of correl...

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Bibliographische Detailangaben
Hauptverfasser:	Engelman, S F, Fife, John M
Format:	Report
Sprache:	eng
Schlagworte:	AIAA-2002-4255 ASYMMETRY COMPUTERIZED SIMULATION CURRENT DENSITY Electric and Ion Propulsion ELECTRODES EXHAUST PLUMES FARADAY EFFECT HALL EFFECT HALL EFFECT THRUSTER HEMISPHERES HEMISPHERICAL MEASUREMENTS HET(HALL EFFECT THRUSTER) ION ENGINES PLASMA ENGINES SPACECRAFT SPT(STATIONARY PLASMA THRUSTER) SPT-140 HALL THRUSTERS THRUSTERS WUAFRL48470052549927
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Beschreibung
Zusammenfassung:	The results of a 3-dimensional hemispherical Faraday probe rake assembly are investigated. Such a system is attractive because it allows measurement of current density at multiple locations simultaneously, and can be used to detect asymmetry in the Hall Effect thruster (HET) beam. For ease of correlation, experiments were conducted using Faraday probes and biasing techniques similar to other organizations within the EP community. Results can be used to validate simulations and to gain an understanding of the proper positioning of HETs on spacecraft. Additionally, the effects of varying the Faraday electrode material are presented. Presented at the AIAA JPC in Indianapolis, IN on 8-10 Jul 2002.