【作者】 高峰；

【导师】 王义强；

【作者基本信息】 吉林大学 ， 机械制造及自动化， 2007， 硕士

【摘要】 本文首先采集民用飞机使用厂家十架民用飞机的故障时间数据,据此建立故障时间数据的分布类型,然后对各项参数进行估计,最后得出各项可靠性指标。通过对某型飞机进行致命度分析,找出飞机存在的薄弱环节,致命度高的零部件。从而在维护方面为维护人员提供明确目标,在产品的可靠性设计方面为飞机零部件的可靠性设计提供依据。本文通过对民用飞机备件设置量的计算,为民用飞机使用厂家提供了明确的飞机备件设置数。从而减少了零部件的闲置浪费或避免由于备件设置量不足造成飞行任务无法完成的后果。更多还原

【Abstract】 FMECA through the application of this law to a certain type of civilian aircraft fault analysis. Whole identify the fault location, mode and causes, from the overall control of a certain type of civilian aircraft occurrence of the fault; identify the affected unit reliability of the larger failure mode; Frequent failure of a component or system failure mode in-depth analysis and the reasons for improving the reliability of the design direction; through the analysis of fatal get to a certain type of civilian aircraft, the weak links and to eliminate its failure to provide basis. Through the provision of spare parts and Theory formula to a certain type of civilian aircraft from the unit and fatal high for parts installed capacity of spare parts, To use civilian aircraft units to determine the required quantity of spare parts store, taking into account economic, benefits, benefits.The main research findings and conclusions are as follows :1. Reliability theory on the basis of reliability Not on the reliability, reliability, fault probability density, the failure rate formula, the basic concept, as well as reliability, reliability, Failure probability density, the rate of failure of the relationship between. For the failure time distribution with different types of reliability, fault probability density, the failure rate curves characteristic detail2. Collecting data to determine the distribution of time type, parameters This paper from the use of a civilian aircraft collected 10 units of a certain type of civilian aircraft failure time data. According to failure time data and the statistical distribution of knowledge obtained : a certain type of civilian aircraft failure time data better meet the two-parameter Weibull distribution. And seek m=1.026713, =111.813913. And thus determine a certain type of civilian aircraft MTBF for the 110.6 hours the average repair time for 1.1526 hours inherent availability 0.98973.FMECA analysisFMECA methods through the use of civil aircraft to use units of a certain type of civilian aircraft failure mode analysis, Fault analysis, the final analysis for fatal. Obtain civilian aircraft use, failure occurs when the unit in terms of failure mode is the most prominent : work is not normal, abnormal, work function failure, leak;From the perspective of system made the most conspicuous failure mode is : ad hoc systems, radio systems, followed by the mechanical system, cargo control system. Whole terms of the cause of the malfunction is the most prominent : components, and damaged parts, internal mechanical failure, not closed; From the perspective of system made the most prominent cause of the malfunction is : ad hoc systems, radio systems, followed by the mechanical system, cargo control system. Further analysis of a certain type of civilian aircraft fault-prone parts of the whole attitude integrated gyro, relay boxes, radio compass, air pressure reducer. This came to the overall weak link, fault-prone parts. So for the entire portfolio attitude gyro, relay boxes, radio compass, air pressure reducer four parts, the reliability of the design should provide adequate measures for improving the purchasing manufacturers should focus on production quality, in the maintenance of required maintenance personnel to put more energy.4. A certain type of civilian aircraft spare parts provision of spare parts identified Spare parts store in question, according to the formula derived very easily : the fixed 84-hour flight time, fixed their number of flights by 12, asking with two fixed civilian aircraft flying time 84 hours; fixed their number of flights under 12 requires the whole attitude integrated gyro, radio compass, the air pressure reducer one; and the relay boxes to two. For the use of civilian aircraft units to determine the required quantity of spare parts store, taking into account economic, benefits, benefits更多还原