Close Lightning Electromagnetic Environment for Aircraft Testing

The University of Florida lightning research group in 1999 measured the electric and magnetic fields and their time derivatives from triggered lightning dart leader/return stroke sequences at distances of 15 m and 30 m, in addition to measuring the causative currents and current time derivatives. Also recorded were the acoustic signals at 3 to 30 m. In this paper, we primarily present results on fields and field derivatives at 15 m, and on currents and current derivatives.