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High Voltage TAL Erosion CharacterizationExtended 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.
Document ID
20030019355
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Jacobson, David T. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
February 1, 2003
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
NAS 1.15:211879
NASA/TM-2003-211879
E-13561
AIAA Paper 2002-4257
Report Number: NAS 1.15:211879
Report Number: NASA/TM-2003-211879
Report Number: E-13561
Report Number: AIAA Paper 2002-4257
Meeting Information
Meeting: 38th Joint Propulsion Conference and Exhibit
Location: Indianapolis, IN
Country: United States
Start Date: July 7, 2002
End Date: July 10, 2002
Sponsors: American Society for Electrical Engineers, Society of Automotive Engineers, Inc., American Society of Mechanical Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
PROJECT: RTOP 755-04-12
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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