Assessment of reliability of tactical level radio stations

The article first proposed an approach to improving the accuracy of quantitative assessment of reliability indicators of radio-electronic means with a variable structure, operating in different modes of operation using separate sets of elements in each of them. In the well-known works, this circumstance is not taken into account and there liability indicators of the product are estimated under the assumption that all elements operate simultaneously, which leads to a decrease in the calculated value of mean time to failure. The problem is solved by the introduction of the utilization rate of each structural element of the product in all possible modes of operation. An example of using the obtained results for the quantitative assessment of the time to failure of a radio station is given, and the effect of clarifying the calculations is shown. Reliability of radio-electronic means is quantitatively evaluated by indicators, the main ones being the time between products failure and the average time of its recovery. They define a comprehensive measure of reliability - availability. Reducing the calculated value of time between failures requires, to ensure its desired value, the use of more reliable components, which leads to an increase in the value of the product as a whole. The article for the first time obtained a mathematical model for assessing reliability indicators, taking into account the product operation time in each of the possible modes, and when calculating the maintainability index, metrological reliability of measuring equipment tools that are used in the process of diagnostics during radio repair is taken into account. The proposed model for estimating the values of reliability indicators of objects with variable structure is advisable to use at the design stage of modern radio electronic equipment. The effect of its implementation is to provide the specified values of reliability indicators of multi-mode electronic means at their minimum cost.