Journal
AEROSPACE
Volume 10, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/aerospace10030320
Keywords
corona discharges; low pressure; pressure change; hybrid aircrafts; electric aircrafts
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The combination of low-pressure environment and aircraft electrification increases the risk of electrical discharges. Most studies only consider static pressure conditions, but aircraft systems experience dynamic pressure conditions during climb and descent. This paper analyzes the effect of dynamic pressure during climb on corona inception voltage and finds that it has no significant impact under typical climb conditions.
The combination of the low-pressure environment found in aircraft systems and the gradual electrification of aircraft increases the risk of electrical discharges occurrence. This is an undesirable situation that compromises aircraft safety and complicates maintenance operations. Experimental data are needed to understand this problem. However, most of the published studies are based on static pressure conditions, but aircraft systems are exposed to dynamic pressure conditions, especially during the climb and descent phases of flight. This paper analyzes the effect of dynamic pressure during the climb phase on the corona inception voltage because this phase experiences the worst pressure drop rate. The experimental evidence presented in this paper shows that within the analyzed pressure drop rate range, the dynamic pressure conditions do not have a significant effect on the corona inception value under typical conditions found in aircraft systems during the climb phase.
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