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为了解决地面放电实验对空中飞机放电刷负电晕放电辐射噪声模拟的问题,分别对飞行器放电刷及针-板放电结构负电晕放电起始阶段进行建模。经过数值计算得到两种模型在一定的放电环境、激励电压及放电刷几何结构条件下,放电的阈值电压;并且探讨了两种模型在不同条件下阴极二次光电子随“电子崩”发展过程。通过比较不同条件下二次光电子的发展趋势,确定不同放电模型电磁辐射的可比性。提出的等效方法为今后有关飞行器放电刷负电晕放电辐射干扰的地面模拟提供理论依据。
In order to solve the problem that the ground discharge experiment simulates the radiant noise of the air-plane discharge brush negative corona discharge, the initial stage of the negative corona discharge of the aircraft brush and pin-plate discharge structure was modeled. The threshold voltages of the two models under a certain discharge environment, excitation voltage and the geometry of the discharge brush are numerically calculated, and the development of the cathode secondary photoelectrons with the “electron collapse” under different conditions is discussed process. By comparing the development trend of the second photoelectrons under different conditions, the comparability of electromagnetic radiation of different discharge models was determined. The proposed equivalent method provides a theoretical basis for the ground simulation of the radiation interference of negative corona discharge of the aircraft discharge brush in the future.