Plasma Oscillation Characterization of NASA's HERMeS Hall Thruster via High Speed Imaging

Plasma Oscillation Characterization of NASA's HERMeS Hall Thruster via High Speed Imaging

The performance and facility effect characterization tests of NASA's 12.5-kW Hall Effect Rocket with Magnetic Shielding had been completed. As a part of these tests, three plasma oscillation characterization studies were performed to help determine operation settings and quantify margins. The s...

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Bibliographische Detailangaben
Hauptverfasser: Huang, Wensheng, Kamhawi, Hani, Haag, Thomas W.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Spacecraft Propulsion And Power
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Beschreibung
Zusammenfassung:The performance and facility effect characterization tests of NASA's 12.5-kW Hall Effect Rocket with Magnetic Shielding had been completed. As a part of these tests, three plasma oscillation characterization studies were performed to help determine operation settings and quantify margins. The studies included the magnetic field strength variation study, background pressure effect study, and cathode flow fraction study. Separate high-speed videos of the thruster including the cathode and of only the cathode were recorded. Breathing mode at 10-15 kHz and cathode gradient-driven mode at 60-75 kHz were observed. An additional high frequency (40-70 kHz) global oscillation mode with sinusoidal probability distribution function was identified.