双极离子液体推进器不同工作频率下极性切换过程的实验研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-12-26 DOI:10.1088/2058-6272/ad18d0

Xiangbei Wu, Cheng Yang, Jiawei Luo, Yan Shen

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引用次数: 0

摘要

双极离子液体推进器采用离子液体作为推进剂，在交流电源下释放带正电和负电的高能粒子，有效抑制电化学反应，确保电荷中性。确定最佳的交流电源频率对于推进器的持续稳定运行至关重要。本研究的重点是离子液体推进器在不同交流条件下的发射特性。交流电源频率设定在 0.5 至 64 Hz 范围内，实验选择了八个特定频率条件。实验结果表明，推进器在 ±1470 至 ±1920 V 的电压范围内稳定运行，相应的正极性电流范围为 0.41 至 4.91 μA，负极性电流范围为 -0.49 至 -4.10 μA。在电压极性切换期间，会出现发射延迟，表现为电路电容特性导致的突出峰值信号和液滴导致的次要峰值信号。在 16 Hz 频率下进行的扩展发射测试表明，在间歇性放电之前，可持续发射约 1 小时 50 分钟。这些发现强调了 8 至 16 赫兹范围内的交流电条件对离子液体推进器自中性化能力的有利影响。

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Experimental investigation on the polarity switching process with different operating frequencies of the bipolar ionic liquid thruster

The bipolar ionic liquid thruster employ ionic liquid as propellant to discharge positively and negatively charged high-energy particles under an alternating current(AC) power source, effectively suppressing electrochemical reaction and ensuring charge neutrality. Determining an optimal AC supply power source frequency is critical for sustained stable thruster operation. This study focuses on the emission characteristics of the ionic liquid thruster under varied AC conditions. The AC power supply was set within the frequency range of 0.5 to 64 Hz, with eight specific frequency conditions selected experimentation. The experimental results indicate that the thruster operate steadily within a voltage range of ±1470 to ±1920 V, with corresponding positive polarity current ranging from 0.41 to 4.91 μA and negative polarity current ranging from -0.49 to -4.10 μA. During voltage polarity switching, an emission delay occurs, manifested as a prominent peak signal caused by circuit capacitance characteristics and a minor peak signal resulting from liquid droplets. Extended emission test were conducted at 16 Hz demonstrating approximately 1 hour and 50 minutes of consistent emission before intermittent discharge. These findings underscore the favorable impact of alternating current conditions within the 8 to 16 Hz range on the self-neutralization capability of the ionic liquid thruster.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.