摘要
当前在工程设计领域,对目标设备进行仿真模拟从而完成对系统功能、性能的验证。基于飞机燃油系统相关运行参数进行建模,建立实验系统,通过系统实验分析,研究了不同运行参数对系统的有效性的影响,包括惰性气体(富氮空气)的流量,惰性气体浓度,油箱的燃料负荷和不同的惰化方式。实验结果表明,在相同的运行条件下,随着惰性气体流量的增加,完全惰化过程的时间跨度下降;使用5%氧浓度的惰性气体的时间跨度比使用纯氮的时间长得多;当燃油箱使用空调清洗方式进行燃油时,时间跨度随着燃油负荷的减小而增加;当完全惰化过程的时间跨度是评估标准时,空载清洗方式显示出最佳的惰化性能,但是当燃料中溶解氧浓度的降低也被认为表征惰化有效性时,空载洗涤和燃料同时洗刷是最有效的。
At present, in the field of engineering design, simulation of target equipment is carried out to complete the verification of system function and performance. Based on the relevant operating parameters of aircraft fuel system, the experimental system was established. The influence of different operating parameters on the system was studied by system experiment. The flow rate of inert gas （ nitrogen-enriched air）, inert gas concentration, The fuel load and the different inerting mode. The experimental results show that the time span of the complete inerting process decreases with the increase of the inert gas flow under the same operating conditions. The time span of the inert gas with 5% oxygen concentration is much longer than that of using pure nitrogen When the fuel tank is fueled with air condi- tioning, the time span increases as the fuel load decreases. When the time span of the fully inerting process is the evaluation criteria, the free cleaning mode shows the best inerting performance, but when the fuel The reduction in dissolved oxygen concentration is also considered to characterize the inactivation efficiency when no-load washing and fuel simultaneous scrubbing are most effective.
出处
《自动化与仪器仪表》
2017年第8期120-122,共3页
Automation & Instrumentation
