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Endurance testing of downstream cathodes on a low-power MPD thrusterA low-power MPD thruster with downstream cathode was tested for endurance with a series of hollow cathode designs. Failure modes and failure mechanisms were identified. A new hollow cathode (with rod inserts) has emerged which shows promise for long life. The downstream positioning of the cathode was also changed from an on-axis location to an off-axis location. Data are presented for a 1332-hour life test of this new hollow cathode located at the new off-axis location. Xenon propellant was used.
Document ID
19740012327
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Burkhart, J. A. (NASA Lewis Research Center Cleveland, OH, United States)
Rose, J. R. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1974
Subject Category
Propulsion Systems
Report/Patent Number
E-7647
NASA-TN-D-7616
Accession Number
74N20440
Funding Number(s)
PROJECT: RTOP 502-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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