The article provides information on the concept of assessing the resource of power elements of the design of a specialized armored vehicle during testing and its adjustment to the standards of NATO member states. It involves the implementation of simulated mathematical modeling with an evaluation of the static and dynamic characteristics of the vehicle's power structure. When simulating fatigue damage of a structure, the hypothesis of a linear damage summation rule is used to more reliably determine the life of a vehicle. During field tests the use of modern hardware and software for measuring the actual characteristics of loading a car when driving on different types of roads is proposed.

A scheme of interrelationships of external and internal macro- and microenvironmental factors and their influence on the states of the unmanned aerial vehicle system has been developed. It is proposed to use an approach with elements of graph theory and set theory to analyze the states of an unmanned aircraft complex. The given graph of the functioning of the man-machine system of a sample of the unmanned aircraft complex of the “micro UAS unmanned aircraft system” class sets the transitions that determine the closed cycle of the execution of a combat mission. An example of building a structure of functional indicators of unmanned aerial vehicles with life cycle elements using graph theory for the analysis of “bottlenecks” in ensuring reliability is given. The analysis of “bottlenecks” in the control systems of unmanned aerial vehicles in the area of the ground control station – unmanned aerial vehicle is aimed at determining directions for increasing reliability, flight safety, increasing functionality, flight range and improving ergonomic characteristics. A comprehensive analysis of the functioning and dynamics of changes in reliability indicators with relevant data for previous periods of operation will allow us to draw specific conclusions about the actual level of reliability of the UAS un manned aircraft system fleet and identify bottlenecks for further improvement and the possibility of transitioning to the use of third-generation BpAK (autonomous devices) with self-learning systems with artificial intelligence. The theoretical rationale and the given practical recommendations should be taken into account when developing new prospective models of unmanned aerial vehicles for the Armed Forces of Ukraine in accordance with their official purpose.

The topical issue of providing aircraft with ground handling equipment of flights that would meet modern requirements of functional and quality indicators, international standards and prospects for the development of aircraft in the context of cooperation with NATO countries is considered. The results of the analysis of open literature sources on the possibilities of manufacturing means of ground maintenance of aircraft by the military-industrial complex of Ukraine are presented. The methodology of the system approach is aimed at the development of general requirements for ground-based power supply and start-up of aircraft engines. Analysis of trends in domestic and foreign models of ground handling equipment has determined that the problem of ensuring a given military-technical level of the fleet of military aircraft and helicopters is becoming more relevant every year, and work to create products and their components requires a comprehensive system approach. Methodical approaches to the development of general requirements for ground-based means of power supply of aircraft are presented. The practical significance of the obtained results lies in the possibility of their use to justify the decision to supply these samples of special-purpose ground handling equipment to the Armed Forces of Ukraine. In this regard, the main task of the military-industrial sector of Ukraine is to prepare the production of analogues of electric and gas equipment for ground handling of aircraft and helicopters and their harmonization with NATO standards.

The paper proposes an integrated approach to determining long-term trends in quantitative indicators of reliability of Mi-8MSB-V and Mi-8MT(MTV) helicopter systems by specialty and their impact on the operational reliability of helicopters. An integrated approach consists in determining the impact of the reliability of helicopter systems on the operational performance of helicopters: the mean time between failures, the average failure rate parameter, the probability of helicopter flight reliability per hour, and the maximum allowable indicative levels of helicopter reliability indicators. The reliability of functional systems for helicopter specialties was determined: helicopter and engine, aviation armament, aviation equipment, radio-electronic equipment based on statistical data on helicopter malfunctions for the period between 2017 and 2021. Proposals have been developed to determine the maximum allowable indicative levels of helicopter reliability indicators based on information about the technical condition during military operation, which will allow adjusting the terms of maintenance, repair, life extension and provide for areas for the modernization of aviation equipment. For an in-depth analysis of the causes of malfunctions and the development of recommendations for their elimination, it is necessary to supplement the information provided in the fault record sheets with information on the number of aircraft, the flight time of which takes into account the developed recommendations for improving the system for collecting operational information on the reliability of the aircraft and its reflection in the fault record sheets. In order to objectively take into account, the impact of aviation armament on the reliability of helicopter engines, it is necessary to provide information on the helicopters flight time using the functional systems of aviation armament. Recommendations are given to improve the reliability of the least reliable elements of helicopter systems.

The article offers a complex approach to determination of long-term trends of quantitative indicators of safety of flights of helicopters Mi-8MSB-V and Mi-8MT (MTV) and influence on them of operational reliability. The integrated approach is to determine the impact of the failure of the functional systems of helicopters on operational reliability and flight safety: average failure rate, mean failure rate, probability of helicopter flight reliability in one hour, Average aircraft accident, probability of absence. Proposals have been developed to improve the reliability and safety of helicopter flights based on information about the technical condition during military operation, which will allow adjusting the terms of maintenance, repair, extending the service life and provide for areas for upgrading aviation equipment. In order to take into account objectively the impact of helicopter systems on the reliability and safety of aircraft equipment flights, information on the flight hours of aircraft equipment should be provided, taking into account the level of functional systems upgrade. Recommendations for improving flight safety and reliability of elements of helicopter systems limiting the reliability of aviation equipment are given.