CFM56-7B发动机起动机连接螺栓失效分析

来源 :航空维修与工程 | 被引量 : 0次 | 上传用户：landy_st

【摘要】

：

CFM56-7B发动机使用的是3505945系列起动机,装载于波音737NG飞机.连接螺栓的头部发生断裂失效是3505945系列起动机的一个常见故障,该故障导致非计划性拆机,甚至引起航班延误.本文根据3505945系列起动机的现有结构,结合其在发动机上的使用工况,对该起动机的连接螺栓进行了失效分析,总结出相关的改进措施,以提高起动机的持续适航性.

【作者】

：

冯志伟陶慧敏

【机构】

：

武汉航达航空科技发展有限公司;金士达实业(武汉)有限公司

【出处】

：

航空维修与工程

【发表日期】

：

2022年1期

【关键词】

：

发动机起动机螺栓失效分析

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

其他文献

A330腹舱乘务员休息间改装方案可行性策略分析与研究

A330飞机可选装位于飞机腹舱的乘务员休息间,以保障国际长航线乘务员得到充分的休息.COVID-19疫情爆发后,国际长航线数量巨减,导致大量休息间处于闲置状态.为增强腹舱资源的合理利用,本文从合理性、经济性、实施性、管控性4个方面对乘务员休息间改装方案的可行性进行深入分析和研究,为航空公司提供改装决策参考.

期刊

乘务员休息间合理性经济性实施性可行性策略分析

Assessment of performance,combustion and emissions characteristics of methanol-diesel dual-fuel comp

The energy security concern and rapidly diminishing fossil fuel resources demand the development of renewable and economically attractive fuel for reciprocating engines.Methanol is a promising renewable alternative fuel.Numerous studies have been carried

期刊

MethanolDual-fuelCombustionDiesel engineParticle emissionsThermal efficienc

超高强度300M钢起落架主支柱激光增材修理应用研究

某型民用飞机起落架开展疲劳试验,进行到105857起落时其主支柱组件主传力部位出现长度34mm裂纹,该支柱材料为300M钢(模锻件).手工打磨裂纹部位,清除裂纹后在零件上形成长约40mm、宽约8mm、深度30～44mm的长条形直通孔,应用A100材料,利用机器人手臂激光熔化沉积增材制造技术开展激光增材修复工艺研究,完成了裂纹的修补,最终成功完成后续135000起落疲劳试验.验证了超高强度钢起落架主承力部件增材修补工艺的技术可行性,表明激光增材修复技术应用于超高强度钢飞机构件的修理具有较广阔的前景.

期刊

激光增材修复技术超高强度钢起落架疲劳寿命

The significance of the posted minimum speed limits along interstate highways in South Carolina on t

This paper evaluated the significance of the posted differential speed limits (DSL) on traffic safety and operation along interstate highways in South Carolina.This paper defines DSL as the difference between the posted maximum and minimum speed limits.Th

期刊

Speed limitMinimum speed limitDifferential speed limitSpeed variationTraffic

Driver injury severity analysis of crashes in a western China's rural mountainous county:Taking

China\'s traffic safety attracts increasing research interest.Official data show that crashes in the western region of China are more severe than those in the eastem region.However,research on crash severity in western China is scarce.This study applied

期刊

Transportation engineeringDriver injury severityWestern China rural mountainou

Review and assessment of different perspectives of vehicle-pedestrian conflicts and crashes:Passive

The importance of investigating pedestrian safety has been evaluated repeatedly in safety studies.The present study attempts to evaluate the various methods used by previous researchers in a hierarchical process,to determine the characteristics,advantages

期刊

Traffic engineeringConflictPedestrianNaturalistic driving studyCrashRoad sa

Investigating the trip configured causal effect of distracted driving on aggressive driving behavior

Risky driving behavior of taxi drivers typically evaluated for full operation or sometimes sorted into occupied and empty running trips.In this paper,we simultaneously analyze aggressive driving and distracted driving of taxi drivers under three different

期刊

E-hailing taxi driverDistracted drivingAggressive drivingNaturalistic driving

基于IGA-Elman算法的民航发动机基线挖掘研究

为进一步提高民航发动机性能参数基线挖掘的准确性,提出了一种基于改进遗传算法(IGA)优化Elman动态回归神经网络的基线预测模型.该模型通过改进遗传算法的交叉和变异概率更新操作,并优化Elman网络的初始权值和阈值.同时,结合EHM系统输出的飞行数据报告,对该神经网络进行训练,用训练好的神经网络对某航空公司提供的监控数据进行基线预测,并与基本Elman神经网络和GA-Elman神经网络的输出值进行对比.实验结果表明,IGA-Elman算法在航空发动机基线预测精度方面优于上述其他方法.

期刊

神经网络改进遗传算法民航发动机基线预测

基于威布尔分布的CFM56-5B发动机风扇润滑间隔调整方法

分析了发动机产生振动的原因,得出风扇叶片润滑是降低发动机振动水平的最有效方法;基于运行数据使用Minitab工具建模,获得润滑后高振动事件的威布尔分布函数,并得到高振动事件概率,结合安全、成本因素等得出最优润滑间隔;通过机队实践,证明了该方法的有效性.

期刊

CFM56-5BN1 VIB润滑Minitab威布尔分布

A peer-to-peer logic environment to validate flashing yellow arrow decision support system

The flashing yellow arrow (FYA) signal display creates an opportunity to enhance the left-turn phase with a variable mode that can be changed on demand.This research develops an integrated general purpose data collection module that time stamps detector a

期刊

Traffic engineeringPeer-to-peer logicFlashing yellow arrowDecision support sy

CFM56-7B发动机起动机连接螺栓失效分析

与本文相关的学术论文