机械科学与技术2025，Vol.44Issue(2)：373-380,8.DOI:10.13433/j.cnki.1003-8728.20230179
极端环境模拟装置在考虑温度影响的起落架落震性能研究中的应用
Application of Extreme Environment Simulation device in Research of Landing Gear Drop Shock Performance Considering Temperature Effect
张飞 1王彬文 1杨正权 1陈熠 1杨建波 1朱晨辰 1王聪 2刘成龙2
作者信息
- 1. 中国飞机强度研究所结构冲击动力学航空科技重点实验室,西安 710065
- 2. 航空工业第一飞机设计研究院,西安 710089
- 折叠
摘要
Abstract
In this paper,the landing gear of an aircraft is taken as the research object,and the landing gear drop performance is studied under high and low temperature environment.Firstly,in order to simulate the extreme high temperature and low temperature environment required with the drop test,the extreme environment simulation device is designed and developed to heat/cool the full-size landing gear.And then,the high and low temperature drop test of landing gear is carried out under different ambient temperatures.The effects of the high temperature and low temperature environments on the landing gear drop performance are highlighted.The results show that with the ambient temperature rising from-55℃to 70℃,the air spring stiffness of the landing gear buffer system increases gradually.The low temperature environment has obvious influence on the oil damping force inside the landing gear buffer.The extreme low temperature environment will lead to the increase in friction force of the landing gear shock absorber and cause the shorter compression stroke of the buffer strut.The high temperature environment mainly affects the stiffness of the air spring inside the shock absorber.The higher the temperature is,the greater the air spring stiffness of the shock absorber is,and the buffer strut is not easy to be compressed.关键词
起落架/落震性能/落震试验/环境温度/极端环境模拟装置Key words
landing gear/drop performance/drop test/ambient temperature/extreme environment simulation device分类
航空航天引用本文复制引用
张飞,王彬文,杨正权,陈熠,杨建波,朱晨辰,王聪,刘成龙..极端环境模拟装置在考虑温度影响的起落架落震性能研究中的应用[J].机械科学与技术,2025,44(2):373-380,8.
