Aerospace Instrument-Making Annotation << Back METHODOLOGY FOR ASSESSING THE DURABILITY INDICATOR OF A MAINTENANCE-FREE COMPLEX TECHNICAL SYSTEM UNDER CONDITIONS OF HIGH POWER ELECTROMAGNETIC INFLUENCE I.P. Emelyanov, V.V. Lisitsky, S.G. Vorona The work is devoted to the study of methods for evaluating the resistance of technical systems and developing the methodology for assessing the resistance of an underlying complex technical system in conditions of electromagnetic exposure to high power. The problematic issue in evaluating the resistant of the resistance of complex technical systems is: the presence of the anticipation of emerging failures, the inappropriateness of the operation of the devices, a large number of technical states of the elements of the structural scheme, the presence of various types of reservation. The use of classical methods for assessing resistance causes great difficulties, since the calculations become laborious or impossible when using one of the methods. Given the advantages and disadvantages of the methods under study, the methodology of the structural-functional assessment of the resistance of an underlying complex technical system to the electromagnetic effect of high power is proposed. This technique using the elements of Markov’s analysis built on the basis of a states graph (failure tree) allows you to increase the accuracy of assessing the resistance of electronic equipment and avoid overpricing for resistance to functional elements of the technical system. Keywords: electromagnetic effects of high power, an inconsistent complex technical system, refusal, critical element, electronic equipment, resistance. DOI: 10.25791/aviakosmos.10.2023.1365 Pp. 03-12.