Effect of fuel type on the performance of an aircraft fuel tank oxygen-consuming inerting system

IF 5.7 1区工程技术 Q1 ENGINEERING, AEROSPACE Chinese Journal of Aeronautics Pub Date : 2021-03-01 DOI:10.1016/j.cja.2020.07.011

Xiaotian PENG, Shiyu FENG, Chaoyue LI, Chen CHEN, Weihua LIU

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引用次数: 6

Abstract

The properties of aviation fuel have a great influence on the performance of oxygen-consuming inerting systems. Based on the establishment of the catalytic inerting process, the flow relationship of each gas component flowing through the catalytic reactor was derived. The mathematical model of the gas concentration in the gas phase of the fuel tank was established based on the mass conservation equation, and the fuel tank model was verified by performing experiments. The results showed that the fuel type exerts a considerably higher influence on the performance of the oxygen-consuming inerting system compared to the corresponding influence on the hollow fiber membrane system, and the relative magnitude of the inerting rates of the four fuel types is RP5 > RP3 > RP6 > JP8. In addition, a higher catalytic efficiency or fuel load rate corresponds to a higher rate of decrease of the oxygen concentration in the gas phase, and the inerting time is inversely proportional to the suction flow rate of the fan. When different fuels are used, the amount of cooling gas and water released from the inerting system are different. Therefore, the influence of fuel type on the system performance should be extensively considered in the future.

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燃油类型对飞机油箱耗氧惰化系统性能的影响

航空燃油的性能对耗氧惯性系统的性能有很大的影响。在建立催化惰化过程的基础上，推导了各气体组分流经催化反应器的流动关系。基于质量守恒方程，建立了燃料箱气相气体浓度的数学模型，并通过实验对模型进行了验证。结果表明，燃料类型对充氧充注系统性能的影响明显高于对中空纤维膜系统性能的影响，四种燃料类型充注速率的相对量级为RP5 > RP3 > RP6 > JP8。此外，较高的催化效率或燃料负荷率对应着较高的气相氧浓度下降速率，惰化时间与风机的吸入流量成反比。当使用不同的燃料时，从惰化系统释放的冷却气体和水的量是不同的。因此，未来应广泛考虑燃料类型对系统性能的影响。

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来源期刊

Chinese Journal of Aeronautics 工程技术-工程：宇航

CiteScore

10.00

自引率

17.50%

发文量

3080

审稿时长

55 days

期刊介绍： Chinese Journal of Aeronautics (CJA) is an open access, peer-reviewed international journal covering all aspects of aerospace engineering. The Journal reports the scientific and technological achievements and frontiers in aeronautic engineering and astronautic engineering, in both theory and practice, such as theoretical research articles, experiment ones, research notes, comprehensive reviews, technological briefs and other reports on the latest developments and everything related to the fields of aeronautics and astronautics, as well as those ground equipment concerned.