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高空低气压电晕放电特性模拟试验研究

DOI: 10.13336/j.1003-6520.hve.2015.05.039, PP. 1704-1708

Keywords: 低气压,针-板电极,电晕放电,起晕电压,Trichel脉冲,脉冲重复频率

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Abstract:

电晕放电对飞行器的运行安全造成严重威胁。为了解高空低气压环境下电晕放电特性,建立了由真空泵、真空计、密闭气罐、高压静电源、动态电位测试仪等组成的高空低气压电晕放电模拟试验系统。采用针-板电极结构模型进行了低气压环境下电晕放电模拟试验,并结合气体放电理论,从微观粒子运动角度对试验结果进行理论分析。结果表明在5~30kPa范围内,随着气压的降低,起晕电压近似呈线性降低,Trichel脉冲幅值、上升沿时间以及重复频率逐渐增大,但脉冲持续时间基本不变,约为600ns。该研究结论可为研究飞行器的电晕放电特性提供参考。

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