飞机起落架收放系统特性和典型故障研究  

Study on Characteristics and Typical Faults of Aircraft Landing Gear Retraction System

作　　者：王鹏 金磊 张倩 李萌 WANG Peng;JIN Lei;ZHANG Qian;LI Meng(AVIC Xi'an Aircraft Industry Group Company Ltd.,Xi'an 710089,China)

机构地区：[1]中航西安飞机工业集团股份有限公司,陕西西安710089

出　　处：《液压气动与密封》2024年第12期112-117,共6页Hydraulics Pneumatics & Seals

摘　　要：基于液压起落架试验台,联合液压系统、起落架收放系统和起落架结构进行综合试验,对一种飞机起落架收放系统的工作特性进行研究,得出液压系统输出流量和开关控制逻辑对起落架收放特性的影响规律。同时针对系统试验过程中出现的“起落架放下硬开锁”典型故障现象进行分析,判定是由于在放下起落架时“先抬起”的动作过程中放下管路出现背压,导致起落架硬开锁。最终通过理论研究和试验结果对比分析,准确定位故障原因,进一步深化对系统的认识。This paper based on hydraulic landing gear test bed,combined hydraulic system,landing gear system,landing gear structure to carry out comprehensive test.Study on the working characteristics of an aircraft landing gear retraction system.Obtain the influence of hydraulic system output flow rate and switch control logic on the landing gear retraction and retraction characteristics.Meanwhile,the typical fault of landing gear down and hard unlocked during system test is analyzed.It is determined that the landing gear is hard unlocked due to back pressure on the lowering pipeline during the lift action when lowering the landing gear.Through the comparative analysis of theoretical research and experimental results,accurately locate the position where fault occurred,further deepen the understanding of the system.

关 键 词：起落架收放系统 工作特性 典型故障 试验研究 

分 类 号：TH137[机械工程—机械制造及自动化] V226[航空宇航科学与技术—飞行器设计] V227