Abstract
The paper presents the results of air penetration strength experimental studies for a two-electrode system consisting of a small radius and plane hemispheres as the method of technical equipment testing for determining their resistance to electrostatic discharges. The hemisphere radius is much smaller than the distance between the electrodes, so the mathematical expression is used since the 50s of the last for the formal determination of the electric field intensification (gain) coefficient value on the hemisphere radius normally directed to the plane. Because of comparing the experimental data obtained by the magnitude of the electric field gain with the calculated values using the above formulas, it was concluded that these expressions are applicable for solving more complex physical and technical problems related to the spacecraft internal electrification problems.
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