Ground performance analysis of aircraft fuel tank cooling inerting system
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摘要: 设计了冷却惰化系统的工作流程并建立了地面状态下冷却惰化的数学模型,通过Modelica软件求解得到了油箱气相空间燃油蒸汽体积分数,燃油和气相空间温度以及制冷量随时间变化关系,并且研究了几个关键参数对惰化效果的影响。结果表明:随着抽气流量的增加和蒸发温度的降低,气相空间燃油蒸汽体积分数越低,气相空间温度也越低,达到冷却惰化的时间也越短,惰化效果也越好。虽然内热源对冷却惰化的效果起到了阻碍的作用,内热源越大,冷却惰化越难实现。但整体上看,冷却惰化是油箱惰化的一种可行替代方法。Abstract: The working process of cooling inerting system was designed and the mathematical model of cooling inerting under ground state was established.Moreover,the relationship between the volume concentration of fuel vapor,the temperature of fuel and gas phase space and the cooling capacity with time was solved by Modelica software.In addition,the influence of several key parameters on the inerting effect was studied.The results showed that with the increase of pumping flow and the decrease of evaporation temperature,the gas phase space fuel vapor volume concentration became lower,the gas phase space temperature declined,the cooling inerting time was shorter,and the inerting effect became better.With the enlargement of internal heat source,it's more difficult to achieve cooling inerting.Although the internal heat source has a bad effect on cooling inerting,cooling inerting is a viable alternative to tank inerting.
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[1] MANATT S A.Fuel tank inerting system: US4556180 [P].1985-12-03. [2] ELY J J,NGUYEN T X,DUDLEY K L,et al.Investigation of electromagnetic field threat to fuel tank wiring of a transport aircraft[R].NASA/TP-2000-209867,2000. [3] CHERRY R,WARREN K.A benefit analysis for nitrogen inerting of aircraft fuel tanks against ground fire explosion[R].CAA (Civil Aviation Authority) Paper 99009,1999. [4] SUMMER S M.Fuel tank flammability assessment method user's manual[R].DOT/FAA/AR-05/8,2008. [5] 徐晶,邵垒,冯诗愚.不同类型惰气对飞机燃油箱可燃性影响理论研究[J].南京航空航天大学学报,2020,52(3):493-498. [6] DADIA D D.Modeling wing tank flammability[D].New Brunswick,NJ,US:Rutgers,The State University of New Jersey,2009. [7] 冯诗愚,刘冠男,江荣杰,等.飞机燃油箱机载惰化技术研究现状与发展趋势[J].航空动力学报,2021,36(3):616-625. [8] 周鹏鹤,刘文怡,刘卫华.飞机燃油箱惰化中氧体积分数控制指标分析[J].航空动力学报,2020,35(9):1856-1865. [9] 刘欢.直升机燃油箱惰化系统富氮气体及引气量需求分析[J].江苏科技信息,2020,37(11):43-46. [10] LI Chaoyue.Performance analysis of aircraft fuel tank inerting system with turbocharger[J].Proceedings of the Institution of Mechanical Engineers:Part G Journal of Aerospace Engineering,2019,233(14):5217-5226. [11] 冯诗愚,李超越,邵垒,等.一种燃油箱绿色惰化系统地面惰化性能分析[J].航空动力学报,2017,32(2):268-274. [12] 冯诗愚,卢吉,刘卫华,等.机载制氮系统中空纤维膜分离特性[J].航空动力学报,2012,27(6):1332-1339. [13] GUPTA A.Method and system for making a fuel-tank inert without an inert gas[J].International Journal of Aerospace,2010,2(1):75-82. [14] 岳鹏.某型民用飞机使用冷却方案降低机身内燃油箱可燃性的研究[J].科技视界,2019 (15):8-9. [15] 吕亚国,任国哲,刘振侠,等.飞机燃油箱热分析研究[J].推进技术,2015,36(1):61-67. [16] 康振烨,刘振侠,任国哲,等.基于MATLAB/Simulink的飞机燃油箱内燃油温度仿真计算[J].推进技术,2014,35(1):62-69 . [17] 兰江,朱磊,赵竞全.通用油箱热模型的建模与仿真[J].航空动力学报,2014,24 (7):124-131. [18] 陶文铨.传热学[M].北京:高等教育出版社,2019. [19] 童升华.国产燃油理化性能与易燃性研究[D].南京:南京航空航天大学,2013. [20] 张斌.民用飞机燃油箱系统热模型分析研究[J].民用飞机设计与研究,2013(1):23-26,36. [21] INCROPERA F P,DEWITT D P.Fundamentals of heat and mass transfer[M].New York:Wiley,1985.
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