File:Field ionization test chamber for carbon nanotube-based miniature ion thruster applications (IA fieldionizationt1094556899).pdf
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Summary
[edit]Field ionization test chamber for carbon nanotube-based miniature ion thruster applications
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| Author |
Crosby, Bryan D. |
| Title |
Field ionization test chamber for carbon nanotube-based miniature ion thruster applications |
| Publisher |
Monterey, California: Naval Postgraduate School |
| Description |
Electric propulsion for micro- and nano-satellites is an increasingly viable solution for station keeping and end-of-life operations. In particular, microelectromechanical systems (MEMS) electrodes for use in a field ionization electric propulsion thruster are starting to show compelling evidence as a viable plasma generator electrode. This was determined by utilizing a bell jar pressure chamber and a proof-of-concept field ionization electrode characterization fixture complete with an accelerator mesh grid, and a beam current data acquisition suite. The complete field ionization electrode characterization apparatus enables the user to view the generated ion plasma and collect beam current, and enables future work to incorporate a thrust stand and a cathode/anode gap micrometer. Beam current collected from a series of experiments comparing angled-wall etched nozzles with and without carbon nanotube (CNT) deposition showed a distinct improvement in maximum collected current. Mass utilization efficiency and specific impulse for a CNT electrode were found to be 0.31% and 17.5 seconds, respectively, at 560V. This is marginal in comparison to thrusters in industry; however, it shows a successful apparatus and test fixture proof of concept. Subjects: carbon nanotubes; field emission; field ionization; electrostatic ion propulsion; cubesat |
| Language | English |
| Publication date | December 2017 |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
| Accession number |
fieldionizationt1094556899 |
| Source | |
| Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| current | 12:07, 20 July 2020 |  | 1,275 × 1,650, 88 pages (4.69 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection fieldionizationt1094556899 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #16400) |
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