论文部分内容阅读
转子非包容失效是威胁飞机飞行安全的典型特殊风险之一,为了分析其对飞机安全性的影响,开发了转子非包容失效安全性分析系统(URFSAS)。将飞机功能危险分析(FHA)中的灾难性功能危险与故障树分析(FTA)中的底事件及飞机数字样机中的设备模型形成映射关系,建立了需求信息关系模型。在CATIA环境下基于Monte Carlo法以随机飞散角和平动角对转子碎片及其扫掠路径作空间几何变换,基于区域划分和层次包围盒法检测失效的飞机设备,通过故障树最小割集与仿真结果数据的对比分析,实现了对转子非包容失效所触发最小割集的识别和安全性的定量分析。最后,以某型飞机的应用实例分析,表明了该系统的有效性和实用性。
Non-inclusive failure of the rotor is one of the typical special risks that threaten the flight safety of the aircraft. In order to analyze its influence on the safety of the aircraft, a rotor non-inclusive failure safety analysis system (URFSAS) was developed. A mapping relationship between the catastrophic danger in aircraft functional hazard analysis (FHA) and the bottom event in fault tree analysis (FTA) and the equipment model in aircraft digital prototype is established and the demand information relation model is established. In the CATIA environment based on Monte Carlo method with random scattering angle and translation angle of rotor debris and its swept path for geometric transformation, based on the regional division and hierarchical bounding box method to detect failure of aircraft equipment, through the fault tree minimum cut set and simulation The comparative analysis of the result data realizes the quantitative analysis of the identification and safety of the minimal cut set triggered by the non-inclusive rotor failure. Finally, the application example of a certain type of aircraft shows that the system is effective and practical.