前起落架应急放故障分析及应急断离方案设计

倪华近; 王钰龙; 印寅; 聂宏; 魏小辉

doi:10.13433/j.cnki.1003-8728.2014.1132

前起落架应急放故障分析及应急断离方案设计

doi: 10.13433/j.cnki.1003-8728.2014.1132

1.
南京航空航天大学机械结构力学及控制国家重点实验室, 南京 210016

基金项目:

国家自然科学基金项目(51075203)

国家自然科学基金项目(51105197)

江苏高校优势学科建设工程项目资助

详细信息

作者简介:
倪华近(1991- ),硕士研究生,研究方向为飞行器起落装置设计,nihuajin08@126.com。

通讯作者:
聂宏,教授,博士十导师,hnie@nuaa.edu.cn。

计量
- 文章访问数: 147
- HTML全文浏览量: 37
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2013-04-28

Fault Analysis of Nose Landing Gear Emergency Lowering System and Design of an Emergency Disconnection Scheme

1.
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

摘要

摘要: 现代飞行器起落架为了减少在飞行时的阻力,一般都设计为可收放的形式.针对某客机前起落架应急放无法上锁的问题,建立了该起落架收放机构及舱门联动机构的力学平衡方程并进行了理论分析,进而基于LMS Virtual.Lab/Motion建立了应急放动力学分析虚拟样机并分析了各外部载荷对收放过程的影响,结果表明,前舱门气动力在起落架应急放行程末端突变为不利载荷,阻碍了起落架应急放下上锁.在上述分析的基础上设计了一种舱门应急断离方案,建立了其动力学模型并通过仿真分析验证了该方案的可行性.
- 起落架 /
- 应急放 /
- 动力学 /
- 应急断离 /
- 气动力
Abstract: Modern aircraft landing gears are generally designed to be retractable to reduce the air resistance while flying. The nose landing gear emergency lowering system of a certain passenger aircraft failed to lock in some tests.Aiming at this problem,mechanical equilibrium equations of the extending-retracting mechanism and the gear-door linkage were set up for theoretical analysis. A virtual prototype of emergency lowering system for dynamics analysis was established with LMS Virtual. Lab /Motion to figure out the effect of external loads on the lowering process. The simulation results indicate that the aerodynamic force of front doors extremely prevents the landing gears from emergency lowering near the end of the whole trip. Using this analysis as a foundation,a door emergency disconnection mechanism was put forward. The dynamics model of the scheme was established and the feasibility of the scheme was validated through simulation.
- aerodynamic force /
- design /
- dynamics /
- emergency disconnection mechanisms /
- emergency lowering system

HTML全文

参考文献(10)

[1]	高泽迥,黄振威,于俊虎,等飞机设计手册14分册:起飞着陆系统设计[M]北京:航空工业出版社,2002Can Z J, Huang ZW,Yu J H, et al. Aircraft desimanualBook 14:taking-off and landing devices design[M]Beijing; Aviation Industry Press,2002(in Chinese)
[2]	Swift K G, Raines M,Booker J D. Advances inprobabilistic design:manufactauring knowledge andapplications[J]. Institution of Mechanical Engineering,2001,215(Part B);297-313
[3]	朱林,孔凡让,尹成龙,等基于仿真计算的某型飞机起落架收放机构的仿真研究[J]中国机械工程,2007,18(1);26-29Zhu L, Kong F R, Yin C L, et al. Dynamic: simulationof retractaing mechanism of the landing gear of an aircraftwith computer simulation techniques[J]ChineseMechanical Engineering, 2007,18(1):26-29(in Chinese)
[4]	Dupow H, Blount G. A review of reliability predictaion [J]Aircraft Engineering and Aerospace Technology, 1997,69(4);356-362
[5]	Federal Aviation Administration, Department oftransportation. Airworthiness Standards:TransportC ategory airplanes-part 25[S].2003
[6]	李艳军飞机液压传动与控制[M]北京:科学出版社,2009:162-169Li Y J. Aircraft hydraulic: transmission and〔ontrol] M]Beijing;Sience Press,2009:162-169(in Chinese)
[7]	张存仿,冯永胜民用飞机起落架应急释放系统研究[J]民用飞机设计与研究,2010,(1);19-21Zhang C F, Feng Y S. Research on landing gearemergency extending system[J]Civil Aircraft Designand Research,2010,(1):19-21(in Chinese)
[8]	龙江,张铎飞机应急放起落架的机构运动可靠性研究[J]机械强度,2005,27(5);624-627Long J, Zhang D. Research on motion process reliabilityof landing gear during emergency extending [J]. Journalof Mechanical Strength, 2005,27(5):624-627(in Chinese)
[9]	冯蕴雯,国志刚,宋笔锋如何确保飞机起落架收放锁系统的可靠性[J]西北工业大学学报,2005,23(2);171-175Feng YW,Guo Z G, Song B F. Exploring how toensure reliability of lock system of retractaing-loweringlanding gear[J]Journal of Northwestern PolytechnicalUnivensity,2005,23 (2):171-175(in Chinese)
[10]	WeiXH,Yin Y, Chen H,et al. Modeling andsimulation of aircraft nose landing gear emergencylowering using co-simulation method[C]//Clausthal-Zellerfeld, Applied Mechanicsand Materials,Germany:Trans Tech Publications,2012:1213-1218