高空低气压下电晕放电电磁脉冲辐射特性模拟实验

doi:10.7527/S1000-6893.2015.0120

Abstract

Abstract:

To study the electromagnetic pulse radiation of corona discharge on the surface of the aircraft under low pressure, a simulation experiment was conducted using the sharp-point conductor. The expression of radiation E-field amplitude under different pressures was achieved, meanwhile the variation of electromagnetic pulse radiation of corona discharge with voltage polarity, pressure and test distance was summed up based on the theory of gas discharge and electromagnetic field. The present work shows the following characteristics. The time-domain waveform of corona discharge radiation E-field shows damped oscillatory and the duration is about 600 ns. The direction of first pulse varies with different polarities. The radiation E-field is mainly concentrated on the polarization direction which is the same as the discharging needle. The spectrum is within 500 MHz and the peaks appear stably at 35 MHz and 170 MHz. In the range of 4 kPa to 30 kPa, the discharge electromagnetic pulse radiation E-field strengthens with the pressure decreasing, which attenuates with increasing test distance. The conclusions may provide a reference for the research of corona discharge electromagnetic pulse radiation.

Key words: low pressure, corona discharge, electromagnetic pulse radiation, aircraft, time-domain, frequency spectrum

CLC Number:

V19
TM153

LIU Hao, LIU Shanghe, CAO Hefei, HU Xiaofeng, FAN Gaohui, ZHANG Yue. Simulation experiment of electromagnetic pulse radiation of corona discharge under high-altitude low pressure[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(12): 3930-3937.

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Simulation experiment of electromagnetic pulse radiation of corona discharge under high-altitude low pressure

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