Electromagnetic Resonance Phenomena in the Aircraft Interior

During a flight, the aircraft on-board systems may be affected by a directional electromagnetic field. The electromagnetic wave penetrates into the interior and spreads through a complex labyrinth of aircraft structures consisting of compartments filled with instrument modules containing electrical system components and devices. The aircraft body and its internal compartments with instrument modules are volumetric resonators, which, when exposed to an electromagnetic field, leads to the occurrence of resonances. Electromagnetic resonance phenomena increase the level of conductive interference in the on-board electrical system cable network and electrical circuits, which negatively affects the system performance quality. When the flight path changes, the electromagnetic field wave incidence angle on the aircraft body and the wave penetration angle into its interior space change. The resonant value of the field electrical component intensity depends on the wave incidence angle on the aircraft, which must be taken into account when choosing technical means to ensure noise immunity. The article addresses matters of determining the maximum value of the field electric component intensity in the case of electromagnetic resonance phenomena occurring in the aircraft interior at various incidence angles of an electromagnetic field wave.