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Investigation of hollow cathode performance for 30-cm thrustersA parametric investigation of 6.35 mm diameter mercury hollow cathodes was carried out in a bell jar. The parameters that were varied were the amount of initial emissive mix, the insert position, the emission current, the cathode temperature, the orifice diameter, and the mercury flow rate. Flow characteristic curves and performance as a function of time were obtained for the various cathodes of interest. Also presented are the results of a 3880 hr life test of a main cathode run at 15 amps emission current with no noticeable changes in keeper and collector voltages.
Document ID
19740027957
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mirtich, M. J. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
October 1, 1973
Subject Category
Propulsion Systems
Report/Patent Number
AIAA PAPER 73-1138
Meeting Information
Meeting: Electric Propulsion Conference
Location: Lake Tahoe, NV
Start Date: October 31, 1973
End Date: November 2, 1973
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
74A10707
Distribution Limits
Public
Copyright
Other

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