摘要
容积和预充气压力是充气式蓄能器的关键参数,对其动态性能(工作状态下,其压力与流量的输出性能)有较大影响。以某型飞机舵面应急型充气式蓄能器计算选型为例,基于Hypneu仿真软件中的液压元件库,结合该型飞机液压系统的主要设计参数以及应急型蓄能器的工作原理,建立蓄能器作动仿真模型;在Hypneu中设置测试点记录仿真曲线,通过仿真曲线分析充气式蓄能器的关键参数对其动态性能的影响;结合理论计算与仿真分析,提出一套蓄能器参数选型方法,并对该选型方法进行试验验证。结果表明:蓄能器的预充气压力越大,初始蓄能器输出的有效容积越小,减少预充气压力增加有效容积的同时会降低蓄能器的输出压力,试验结果与仿真结果接近,使用该方法选型的蓄能器能够满足作动要求。
Volume and pre-charge gas pressure are the key parameters of the gas-charged accumulator,which are of great influence on its dynamic performance(the output performance of pressure and flow under working conditions).The calculation and selection of a certain type of aircraft rudder surface emergency gas accumulator is taken as an example,based on the hydraulic component library in the Hypneu simulation software,combined with the main design parameters of this type of aircraft hydraulic system and the working principle of the emergency accumulator,the simulation model of the actuation of the accumulator is established.The test points are set in Hypneu to record the simulation curve,and the influence of the key parameters of the gas-filled accumulator on its dynamic performance is explored by analyzing the simulation curve.The theoretical calculation and simulation analysis are combined to propose a set of accumulator parameter selection method,and the selection method is verified by experiments.The results show that the greater of the pre-charge gas pressure of the accumulator is,the smaller the effective volume output by the initial accumulator is,and the reduction of the pre-charge gas pressure can increase the effective volume,and reduce the output pressure of the accumulator at the same time.The experimental results are close to the simulation results,and the accumulator selected by this method can meet the actuation requirements.
作者
朱海龙
张倩
肖晓蕾
张朋
ZHU Hailong;ZHANG Qian;XIAO Xiaolei;ZHANG Peng(Engineering Technology Center,AVIC XAC Commercial Aircraft Co.,Ltd.,Xi’an 710089,China;Institute of Aeronautical Equipment,AVIC Qing’an Group Co.,Ltd.,Xi’an 710077,China)
出处
《航空工程进展》
CSCD
2023年第2期121-128,共8页
Advances in Aeronautical Science and Engineering
关键词
飞机
液压仿真
预充气量
充气式蓄能器
应急型充气式蓄能器
蓄能器容积
Hypneu
aircraft
hydraulic simulation
pre-charge gas volume
gas-charged accumulator
emergency gascharged accumulator
accumulator volume
Hypneu
