Real-time plasma diagnostic tool for the investigation of azimuthal rotating instabilities in Hall Effect thrusters

被引：0

作者：

Masi, L. ^{[1
]}

Presi, M. ^{[1
]}

Matteo, A. ^{[1
]}

Dancheva, Y. ^{[2
]}

Scortecci, F. ^{[2
]}

Coduti, G. ^{[3
]}

Piragino, A. ^{[3
]}

Vial, V. ^{[3
]}

机构：

[1] Aerospazio Tecnologie s.r.l., LI, Collesalvetti

[2] Aerospazio Tecnologie s.r.l., SI, Rapolano Terme

[3] Safran Spacecraft Propulsion, Vernon

来源：

Journal of Electric Propulsion | 2025年 / 4卷 / 01期

基金：

欧盟地平线“2020”;

关键词：

Azimuthal instabilities; Diagnostics; Electric propulsion; Hall effect; Non-intrusive; Plasma; Thruster;

D O I：

10.1007/s44205-024-00098-7

中图分类号：

学科分类号：

摘要：

The following paper reports about a non-intrusive diagnostic system able to measure the frequency of azimuthal instabilities inside the discharge channel of Hall Effect Thrusters (HETs) up to several hundreds of kHz in a real-time fashion. The innovative optical assembly, formed by an optimized sensor array, can help to drastically reduce the amount of processed data and the size of the opto-electronic front-end. The performances of the diagnostic system have been tested successfully during several tests on a HET in different regimes, showing an accuracy and reliability comparable with the state-of-the-art video recording methods. In order to test the real-time fashion of the diagnostic, we have monitor the time-evolution of the azimuthal mode spectra during the startup transient of the thruster, highlighting a redistribution of the oscillation energy among the different mode to an asymptotic stationary regime. The high compactness of the developed sensor array opens new possibilities to perform simultaneously multi-channel or species-selective real-time measurements, while the reduced electronics and power consumption pave the way to miniaturized tools for on-flight diagnostics. © The Author(s) 2025.

引用

共 24 条

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