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为了研究固定翼飞机静电分布特性及着陆时静电泄放,在论述了固定翼飞机空中飞行时的静电产生机理、飞机静电的消散形式后用矩量法分别求取了飞机空中飞行、停靠地面时的电荷分布;获得了飞机着陆时的放电时间常数及某型飞机2种不同状态下的飞机电容:空中飞行时400pF,停靠地面时1.3nF。电荷分布计算结果与理论分析吻合,电容值与美军标Mil-Std-464给定数值一致,说明计算正确。最后根据静电放电的脉冲特性,建立了着陆时的静电放电的传输线电路模型,通过分析模型,给出了着陆时高阻的安全放置位置。
In order to study the static distribution characteristics of fixed-wing aircraft and the electrostatic discharge during landing, the mechanism of static electricity generation during fixed-wing aircraft flying is discussed. After the static dissipative form of aircraft is obtained, the aircraft flight is calculated by the moment method. The discharge time constants and the aircraft capacitances in two different states of a certain aircraft were obtained when the aircraft landed: 400pF in flight and 1.3nF in ground. The charge distribution calculation results are in good agreement with the theoretical analysis. The capacitance values are consistent with those given by the Mil-Std-464 standard, which shows that the calculation is correct. Finally, according to the impulse characteristics of electrostatic discharge, the circuit model of the transmission line of electrostatic discharge upon landing is established. By analyzing the model, the safe placement of high resistance at landing is given.