飞机燃油箱惰化能力降级指标分析  

Analysis of inerting index when inerting capability of aircraft fuel tank was degraded

作　　者：吕旭飞 姚尚宏[1] 杜明杰 LÜXufei;YAO Shanghong;DU Mingjie(Power-Plant Institute,Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院发动机所,西安710089

出　　处：《航空动力学报》2023年第5期1067-1074,共8页Journal of Aerospace Power

基　　金：稳定支持基金(WD-2020-2-1)。

摘　　要：为明确飞机燃油箱惰能力降级指标,从点燃试验的试验设施、试验结果及不同试验之间结果差异的原因3个方面总结和分析了燃油箱点燃试验的文献,根据文献分析结果将燃油箱的惰化能力分为四个等级,分析发现:试验设施差异、点燃标准不同是不同试验结果存在差异的主要原因;高能点火源试验在燃爆标准、试验影响因素和试验结果方面存在特殊性,其对燃油箱混气惰化能力要求更高;飞机燃油箱的惰化能力会随着混气中氧气浓度的增加而降低,不同燃油箱惰化状态下燃油箱的安全性也存在差别,这种惰化能力的降级同时需要考虑点火源和混气气压的影响。In order to clarify the degradation index of the inerting of aircraft fuel tank,some literature of fuel tank ignition test were summarized and analyzed from three aspects:test facilities,test results and the reasons for the differences between different tests.According to the results of literature analysis,the inerting of fuel tank was divided into four grades.It was found that the differences of test facilities and ignition standards were the main reasons for the differences between different test results.The high-energy ignition source test had particularity in the aspects of explosion standard,test effect factors and test results,requiring for higher inerting ability of fuel tank.The inerting capacity of aircraft fuel tank could decrease with the increase of oxygen volume fraction in mixed gas,and the safety of fuel tank varied under different inerting conditions.The degradation of inerting capacity need to consider the effect of ignition source and mixed gas pressure at the same time.

关 键 词：飞机燃油箱 惰化指标 限制氧体积分数 变化规律 能力降级 

分 类 号：V228.11[航空宇航科学与技术—飞行器设计]