Time-of-Flight Measurements in the Jet of a High-Current Vacuum Arc Thruster

IF 2.1 3区工程技术 Q2 ENGINEERING, AEROSPACE

Aerospace Pub Date : 2023-11-30 DOI:10.3390/aerospace10121011

Etienne Michaux, S. Mazouffre

引用次数: 0

Abstract

Measurements of ion speed in the plume of a pulsed high-current vacuum arc thruster were performed by means of electrostatic probes. The probes were designed to provide direct speed measurements with minimum disturbance on the plasma jet. Typical mean values of vi for Ti and Cu cathodes are determined at different locations downstream of the electrodes, in the far field region. From one VAT discharge to another, the mean ion speed strongly varies which leads to a large statistical dispersion. Single-shot analysis allows the observation of the plume anisotropy and its high divergence as well as the existence of several ion groups of different speeds throughout a discharge.

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大电流真空电弧推进器喷流中的飞行时间测量

利用静电探测器对脉冲大电流真空电弧推进器羽流中的离子速度进行了测量。探头的设计目的是在对等离子体射流干扰最小的情况下提供直接的速度测量。在远场区域电极下游的不同位置测定了钛和铜阴极的典型平均 vi 值。从一个 VAT 放电到另一个 VAT 放电，平均离子速度变化很大，从而导致较大的统计离散性。通过单次分析，可以观察到羽流各向异性及其高度发散性，以及在整个放电过程中存在多个不同速度的离子群。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aerospace ENGINEERING, AEROSPACE-

CiteScore

3.40

自引率

23.10%

发文量

661

审稿时长

6 weeks

期刊介绍： Aerospace is a multidisciplinary science inviting submissions on, but not limited to, the following subject areas: aerodynamics computational fluid dynamics fluid-structure interaction flight mechanics plasmas research instrumentation test facilities environment material science structural analysis thermophysics and heat transfer thermal-structure interaction aeroacoustics optics electromagnetism and radar propulsion power generation and conversion fuels and propellants combustion multidisciplinary design optimization software engineering data analysis signal and image processing artificial intelligence aerospace vehicles'' operation, control and maintenance risk and reliability human factors human-automation interaction airline operations and management air traffic management airport design meteorology space exploration multi-physics interaction.