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Minimizing total lifecycle expected costs of digital avionics' maintenance

机译：最大限度地减少数字航空电子设备维护的总生命周期预期成本

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Continuous growth in modern avionics systems complexity allows the extension of the functionality of flight control and navigation systems and leads to an increase in operating expenses. Currently, avionics maintenance costs approximately 30% of the total aircraft maintenance costs. Great impact on the avionics maintenance cost has high rate of intermittent failures, which has been estimated as approximately 50% in military avionics. Here, a mathematical reliability model of continuously tested LRU subject to permanent and intermittent failures is developed. Mathematical expressions for availability of redundant systems are derived considering the spare part system sufficiency. A detailed analysis of the three different variants of the breakdown maintenance strategy (BMS) of modern avionics systems is presented. A criterion of optimizing the number of spare parts is proposed. Some considerations for choosing the optimum variant of the BMS are outlined.
机译：现代航空电子系统的持续增长复杂允许扩展飞行控制和导航系统的功能，并导致运营费用增加。目前，航空电子管理费用约占飞机维护成本总量的30％。对航空航空客运成本的影响很大，间歇性失败率高，估计在军用航空电子中约为50％。这里，开发了经受永久性和间歇故障的连续测试的LRU的数学可靠性模型。考虑备件系统充足的推导出冗余系统的可用性的数学表达式。提出了对现代航空电子系统的击穿维护策略（BMS）的三种不同变体的详细分析。提出了优化备件数量的标准。概述了选择BMS最佳变体的一些考虑因素。

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