摘要
硬管式空中加油系统在紧急情况下结束加油时,加油油量在短时间内从最大流量减小为零,会在加油接头处产生强烈的压力冲击,可能会造成空中加油系统结构破坏,甚至危及加、受油机飞行安全。为了研究系统压力冲击抑制的最主要附件缓冲装置对空中加油系统压力冲击抑制性能的影响,首先分析了系统压力冲击产生机理及抑制方法,建立了系统主要附件的数学模型以及系统仿真模型,然后从缓冲装置开孔数量、开孔大小、胶囊预冲压压力、胶囊容积等方面开展了缓冲装置参数变化对空中加油系统压力冲击抑制的仿真分析和研究。仿真结果表明,通过增加缓冲装置每排开孔数、开孔排数、开孔孔径等方法可以有效减小第一次压力冲击峰值,胶囊预冲压力和胶囊初始容积对第一次冲击压力影响较小。
ABSTRACT：In order to research the influence of main accessory buffer device of pressure shock restraint of system on inhibition performance of pressure shock of air refueling system, we firstly analyzed the mechanism of production and restraining method of pressure impact, and then established a mathematical model of main accessories and the simulation model of system. Moreover, we simulated and analyzed the inhibitive effect of parameter change of buffer device for pressure shock of air refueling system from following aspects： number of hole, size of hole, pre-impact pressure of capsule, volume of capsule. Simulation results show that increasing the number of hole in each row, the number of rows and the aperture can effectively reduce the first peak of pressure shock, the pre-impact pressure of capsule and the initial volume of capsule have less influence on the first shock pressure.
出处
《计算机仿真》
北大核心
2018年第1期33-37,107,共6页
Computer Simulation
基金
国家自然科学基金(51105374)
陕西省自然科学研究基础计划(2015JM5207)
关键词
缓冲装置
空中加油
压力冲击
抑制
仿真
Buffer device
Air refueling
Pressure shock
Restraint
Simulation
