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Performance characterization and vibration testing of 30-cm carbon-carbon ion optics

Show simple item record Steven Snyder, John Brophy, John R. 2006-11-28T19:22:26Z 2006-11-28T19:22:26Z 2004-07-11
dc.identifier.citation 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Fort Lauderdale, Florida, July 11-14, 2004. en
dc.identifier.citation AIAA 2004-3959 en
dc.identifier.clearanceno 04-2162
dc.description.abstract Carbon-based ion optics have the potential to significantly increase the operable life and power ranges of ion thrusters because of reduced erosion rates compared to molybdenum optics. The development of 15-cm and larger diameter grids has encountered many problems, however, not the least of which is the ability to pass vibration testing. JPL has recently developed a new generation of 30-cm carbon-carbon ion optics in order to address these problems and demonstrate the viability of the technology. Perveance, electron backstreaming, and screen grid transparency data are presented for two sets of optics. Vibration testing was successfully performed on two different sets of ion optics with no damage and the results of those tests are compared to models of grid vibrational behavior. It will be shown that the vibration model is a conservative predictor of grid response and can accurately describe test results. There was no change in grid alignment as a result of vibration testing and a slight improvement, if any change at all, in optics performance. en
dc.description.sponsorship NASA/JPl en
dc.format.extent 3390030 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004. en
dc.subject carbon-carbon en
dc.subject ion thrusters en
dc.subject grids en
dc.subject performances en
dc.subject vibrations en
dc.title Performance characterization and vibration testing of 30-cm carbon-carbon ion optics en
dc.type Preprint en

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