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5200 cycle of an 8-cm diameter Hg ion thrusterAn accelerated cycle test was conducted in which an 8-cm Engineering Model Thruster (EMT) prototype successfully completed 5200 on-off cycles and a total of more than 1300 hours of thruster operation at a 4.5 mN thrust level. Cathode tip heater powers required for starting and keeper voltages remained well within acceptable limits. The discharge chamber utilization and electrical efficiency were nearly constant over the duration of the test. It is concluded that on-off cyclic operation by itself does not appreciably degrade starting capability or performance of the 8-cm EMT.
Document ID
19780048827
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mantenieks, M. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Wintucky, E. G.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
April 1, 1978
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 78-649
Meeting Information
Meeting: International Electric Propulsion Conference
Location: San Diego, CA
Country: US
Start Date: April 25, 1978
End Date: April 27, 1978
Sponsors: American Institute of Aeronautics and Astronautics, Deutsche Gesellschaft fuer Luft- und Raumfahrt
Accession Number
78A32736
Distribution Limits
Public
Copyright
Other

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