High Voltage TAL Erosion Characterization | Zendy

David Jacobson | Zendy; David Manzella | Zendy

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High Voltage TAL Erosion Characterization

Author(s) -

David Jacobson,

David Manzella

Publication year - 2002

Publication title -

nasa sti repository (national aeronautics and space administration)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2002-4257

Subject(s) - characterization (materials science) , erosion , computer science , materials science , geology , geomorphology , nanotechnology

Extended operation of a D-80 anode layer thruster at high voltage was investigated. The thruster was operated for 1200 hours at 700 Volts and 4 Amperes. Laser profilometry was employed to quantify the erosion of the thruster's graphite guard rings and electrodes at 0, 300, 600, 900, and 1200 hours. Thruster performance and electrical characteristics were monitored over the duration of the investigation. The guard rings exhibited asymmetric erosion that was greatest in the region of the cathode. Erosion of the guard rings exposed the magnet poles between 600 to 900 hours of operation.

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