Magnitude of Corona Current Caused by Aircraft Net Charge

作者：Da Xingya^*; Shen Huairong; Hong Lei

来源：Journal of Aircraft, 2009, 46(3): 1005-1008.

DOI：10.2514/1.39857

This paper presents a new method to estimate the corona current emitted from aircraft through calculating the electric field distribution around the corona point on the aircraft surface. Assuming the ion transition region to be a semisphere, the electric field distribution caused by the net charge in this semisphere is calculated based on the method of moments. The charge distribution in the semisphere is deduced by taking the field-distribution model into Poisson's equation for electrostatics, and then the corona-current model is established based on Ohm's law. By taking the wind speed of 30 m/s as the flight speed, the computational result of the approximate relation between wing-tip current and aircraft net charge for a TF-1 unmanned aerial vehicle is I(s) = 1.3815Q - 0.00621Q, where Q is the net charge in microcoulombs and I(s) is the current in microampere. Works in this paper show that the magnitude of the corona current caused by aircraft net charge is almost proportional to the magnitude of net charge and aircraft flight speed.

• 出版日期2009-6
• 单位中国人民解放军装备学院