民用飞机结构检查可达性分析研究

Structural inspection accessibility analysis of civil aircraft

结构检查的可达性对于航空公司的定检维修相当重要,而针对民用飞机的结构可达性分析的研究相对较少。从适航条款的要求出发,结构可达性可分为目视检查(一般目视检查和详细目视检查)任务、无损检测任务和更换、调整任务,而检查类型任务才是可达性分析的重点。提出了一种结构检查可达性的分析方法,总结了目视检查任务和无损检测任务两种类型任务的检查要求,根据检查任务的检查要求,基于人体实体可达性、结构本体可达性、光照情况和维修资源使用情况四个角度,提出可达性检查等级,可达性检查等级结合检查任务实施的检查门槛值和检查重复间隔,给出可达性分析结论。通过某型飞机详细目视检查任务和无损检测任务的案例分析,可以看出此结构检查可达性分析方法易于操作,并可以给出明确的可达性结论,为可达性措施条款的符合提供了一种分析途径。

The accessibility of structural inspection is very important for the regular inspection and maintenance of airlines,while the research on structural accessibility analysis of civil aircraft is relatively less.From the requirements of airworthiness clauses,structural accessibility can be divided into visual inspection(general visual inspection and detailed visual inspection)tasks,NDT(non-destructive testing)tasks and replacement and adjustment tasks,and inspection type tasks are the focus of accessibility analysis.This paper proposes an analysis method for structure accessibility,and the inspection requirements for visual inspection tasks and nondestructive testing tasks are summarized.According to the inspection requirements of inspection tasks,the accessibility inspection level was proposed based on the four perspectives of human body accessibility,structure body accessibility,lighting condition and the use of maintenance resource.The accessibility inspection level was combined with the inspection threshold and inspection repetition interval of inspection task,and the accessibility analysis conclusion was given.Through the case study of the detailed inspection task and NDT tasks of an aircraft,it can be seen that this structural accessibility analysis method is easy to operate,and can give a clear accessibility conclusion,which can provide an analysis approach for the compliance of accessibility airworthiness clauses.