摘要
In this work, a simulated aircraft fuel tank inerting system has been successfully estab- lished based on a model tank. Experiments were conducted to investigate the influences of different operating parameters on the inerting effectiveness of the system, including flow rate of the inert gas （nitrogen-enriched air）, inert gas concentration, fuel load of the tank and different inerting approaches. The experimental results show that under the same operating conditions, the time span of a complete inerting process decreased as the flow rate of inert gas was increased; the time span using the inert gas with 5% oxygen concentration was much longer than that using pure nitrogen; when the fuel tank was inerted using the ullage washing approach, the time span increased as the fuel load was decreased; the ullage washing approach showed the best inerting performance when the time span of a complete inerting process was the evaluation criterion, but when the decrease of dissolved oxygen concentration in the fuel was also considered to characterize the inerting effective- ness, the approach of ullage washing and fuel scrubbing at the same time was the most effective.
In this work, a simulated aircraft fuel tank inerting system has been successfully estab- lished based on a model tank. Experiments were conducted to investigate the influences of different operating parameters on the inerting effectiveness of the system, including flow rate of the inert gas （nitrogen-enriched air）, inert gas concentration, fuel load of the tank and different inerting approaches. The experimental results show that under the same operating conditions, the time span of a complete inerting process decreased as the flow rate of inert gas was increased; the time span using the inert gas with 5% oxygen concentration was much longer than that using pure nitrogen; when the fuel tank was inerted using the ullage washing approach, the time span increased as the fuel load was decreased; the ullage washing approach showed the best inerting performance when the time span of a complete inerting process was the evaluation criterion, but when the decrease of dissolved oxygen concentration in the fuel was also considered to characterize the inerting effective- ness, the approach of ullage washing and fuel scrubbing at the same time was the most effective.
作者简介
Cal Yah is a Ph.D. student at School of Aeronautic Science and Engineering, Beihang University. He received his B.S. degree from Tsinghua University in 2006. His area of research includes aircraft fuel tank inerting, onboard oxygen generation system.E-mail addresses： caiyan1230@163.comBu Xueqin received the B.S., M.S. and Ph.D. degrees from Beihang University in 2003, 2005 and 2010 respectively, and then became a teacher there. Her main research interests are fuel tank inerting, air- craft anti-icing de-icing. Corresponding author. Tel.： ＋ 86 10 82338600. buxueqin@buaa. edu.cnLin Guiping is a professor and Ph.D. supervisor at School of Aeronautic Science and Engineering, Beihang University. He received the Ph.D. degree from the same university in 1993. His current research interests are environment control and life support system, aircraft anti-icing and de-icing, enhanced heat transfer technology.gplin@buaa.edu.cn
