中文摘要：

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。

英文摘要：

The safety of aircraft is threatened by corona discharge. In order to research the characteristics of corona dis- charge under low atmospheric pressure, we established a low atmospheric pressure corona discharge test system which is constituted of vacuum pump, vacuum meter, sealed tank, high voltage direct current power, and dynamic potential meter, etc＇. Using the needle-plate electrode structure model, we tested the corona discharge under low pressure environment in this system. The results were analyzed by the gas discharge theory from the microscopic particles sports. The results show that, in the range of 5 to 30 kPa, with the decrease of atmospheric pressure, the inception voltage decreases approximately linearly, the rise time, peak value, and repetition frequency of the discharge Trichel pulse increase, while the duration of current pulse is about 600 ns without change. These results can provide references for studying the discharge characteris- tics of aircraft.