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Performance of 30-cm ion thrusters with dished accelerator gridsThirteen sets of dished accelerator grids were treated on five different 30 cm diameter bombardment thrusters to evaluate the effects of grid geometry variations on thruster discharge chamber performance. The dished grid parameters varied were: grid-to-grid spacing, screen and accelerator grid hole diameter, screen and accelerator open area fraction, compensation for beam divergence losses, and accelerator grid thickness. The effects on discharge chamber performance of main magnetic field changes, magnetic baffle current, cathode pole piece length and cathode position were also investigated.
Document ID
19730022012
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rawlin, V. K. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1973
Subject Category
Propulsion Systems
Report/Patent Number
NASA-TM-X-68294
E-7642
Report Number: NASA-TM-X-68294
Report Number: E-7642
Meeting Information
Meeting: Elec. Propulsion Conf.
Location: Lake Tahoe, NV
Country: United States
Start Date: October 31, 1973
End Date: November 2, 1973
Accession Number
73N30744
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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