ASSESSMENT OF THE IMPACT OF THE FUNCTIONAL SYSTEMS OF Mi-8MSB-V AND Mi-8MT(MTV) HELICOPTERS ON THEIR SAFETY INDICATORS IN 2017-2021

Abstract

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.