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Time-dependent erosion of ion optics

Show simple item record Wirz, Richard E. Anderson, John R. Katz, Ira Goebel, Dan M. 2015-07-14T18:00:06Z 2015-07-14T18:00:06Z 2008-07-21
dc.identifier.citation 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Hartford, Connecticut, July 21-23, 2008 en_US
dc.identifier.clearanceno 08-2308
dc.description.abstract The accurate prediction of thruster life requires time-dependent erosion estimates for the ion optics assembly. Such information is critical to end-of-life mechanisms such as electron backstreaming. CEX2D was recently modified to handle time-dependent erosion, double ions, and multiple throttle conditions in a single run. The modified code is called “CEX2D-t”. Comparisons of CEX2D-t results with LDT and ELT post-tests results show good agreement for both screen and accel grid erosion including important erosion features such as chamfering of the downstream end of the accel grid and reduced rate of accel grid aperture enlargement with time. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2008 en_US
dc.subject grid life en_US
dc.subject ion thrusters en_US
dc.title Time-dependent erosion of ion optics en_US
dc.type Preprint en_US

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