飞机故障的运行后果及成本分析方法

系统故障的运行后果分析技术是飞机运行可靠性分析的重要分支，可为维修任务的成本效益分析提供有力支撑。为了研究飞机系统故障对运行后果及成本的影响，从系统故障运行后果的相关性分析入手，首先，梳理飞机系统故障类型和放行情况对运行后果的影响；然后，结合航线维修现行做法及事件树思想提出一种支持评估飞机系统故障的运行后果及其相关成本的方法，建立基于飞机系统故障的运行后果与成本评估模型；最后，以某型号飞机燃油系统为例，验证所提方法的可行性和适用性。结果表明：本文所提方法合理有效，可为评估故障运行后果提供支持，为飞机的设计、运行和维护提供一定的参考。

Operational Consequence and Cost Analysis Method of Aircraft Failure

Operational consequence analysis of system failure is an important branch of aircraft operational reliability analysis, which can provide strong support for cost-benefit analysis of maintenance tasks. In order to study the impact of aircraft system failure on operational consequences and costs, this study starts with the correlation analysis of operational consequences of system failures. Firstly, the impact of aircraft system fault types and release conditions on operational consequences is analyzed. Then, combined with the current practice of airline maintenance and the idea of event tree, a method to support the evaluation of operational consequences and related costs of aircraft system failures is proposed, and the operational consequence and cost assessment model based on aircraft system failure is established. Finally, the feasibility and applicability of the proposed method are verified by taking the fuel system of a certain type of aircraft as an example. The results show that the proposed method is reasonable and effective, which can provide support for evaluating the consequences of failure operation, and provide certain reference for aircraft design, operation and maintenance.