Designing the electrical complex of an aircraft, taking into account electromagnetic compatibility

THE PURPOSE. To consider the problems of the ingress and propagation of electromagnetic interference in individual on-board devices of the electrical complex of the aircraft. To check the object under study of the on-board electrical equipment complex of the aircraft for compliance with the requirements of regulatory documents regarding electromagnetic compatibility. To develop recommendations for the elimination of conductive and inductive interference of the studied object of the on-board complex of electrical equipment of the aircraft. METHODS. To solve the research problems, a set of methods was used, including graph modeling of the topology of electromagnetic interference propagation in the aircraft body, finite element analysis of electromagnetic fields and mathematical modeling methods. RESULTS. The issues of penetration and propagation of electromagnetic interference in structural elements and circuits of electrical systems of an aircraft are investigated. Verification of compliance of on-board electrical equipment with regulatory requirements for electromagnetic compatibility has been performed. A topological model of interference distribution inside the aircraft body has been developed. The analysis of induced interference from external sources of electromagnetic radiation is carried out. Practical recommendations for minimizing conductive and inductive leads in on-board electrical equipment are formulated. CONCLUSION. When conducting a study on compliance with the requirements of regulatory documents in terms of electromagnetic compatibility. It was revealed that it is necessary to refine the methods of shielding sensitive elements of the studied object of the onboard complex of electrical equipment of the aircraft. Several ways to eliminate conductive and inductive interference of the object under study of the on-board complex of electrical equipment of the aircraft were presented and the optimal one was chosen.

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