民用飞机起落架应急放选择阀的故障分析及改进  

Failure Analysis and Improvement of Civil Aircraft Landing Gear Emergency Release Selector Valve

作　　者：李静 亢敏 LI Jing;KANG Min(AVIC XAC Commercial Aircraft Limited Liability Company,Xi'an 710089,China;Xi'an Certification Sub-center,Airworthiness Certification Center,Xi'an 710089,China)

机构地区：[1]中航西飞民用飞机有限责任公司,陕西西安710089 [2]适航审定中心西安审定分中心,陕西西安710089

出　　处：《液压气动与密封》2025年第3期125-128,共4页Hydraulics Pneumatics & Seals

摘　　要：针对民用飞机起落架应急放选择阀在复位位置时,应急放选择阀内漏大,且执行应急放指令后,应急放选择阀无法运动到应急放位置故障的现象,对应急放选择阀工作原理进行分析,确定了出现问题的原因,提出了解决方案并通过了试验验证。研究工作有望对类似问题的解决提供参考,研究工作具有重要的工程意义和实用价值。For civil aircraft landing gear emergency release selection valve in the reset position,the internal leakage of the emergency amplifier selection valve is large,and after executing the emergency release command,the emergency discharge selection valve cannot move to the emergency discharge position fault phenomenon,through the working principle of the emergency release selection valve is analyzed,the cause of the problem was identified,the solution is proposed,and the test verification is passed.This paper is expected to provide a reference for relevant professional and technical personnel to analyze such faults.The research work is expected to provide a reference for the solution of similar problems,and the topic selection work has important engineering significance and practical value.

关 键 词：应急放系统 应急放选择阀 应急放失效 故障分析 试验 

分 类 号：TH137[机械工程—机械制造及自动化]