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昼夜温度变化对燃油箱空余空间氧浓度的影响

张瑞华 刘卫华 彭孝天 冯诗愚

张瑞华, 刘卫华, 彭孝天, 等 . 昼夜温度变化对燃油箱空余空间氧浓度的影响[J]. 北京航空航天大学学报, 2020, 46(5): 1018-1023. doi: 10.13700/j.bh.1001-5965.2019.0331
引用本文: 张瑞华, 刘卫华, 彭孝天, 等 . 昼夜温度变化对燃油箱空余空间氧浓度的影响[J]. 北京航空航天大学学报, 2020, 46(5): 1018-1023. doi: 10.13700/j.bh.1001-5965.2019.0331
ZHANG Ruihua, LIU Weihua, PENG Xiaotian, et al. Influence of diurnal temperature changes on oxygen concentration in free space of fuel tank[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(5): 1018-1023. doi: 10.13700/j.bh.1001-5965.2019.0331(in Chinese)
Citation: ZHANG Ruihua, LIU Weihua, PENG Xiaotian, et al. Influence of diurnal temperature changes on oxygen concentration in free space of fuel tank[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(5): 1018-1023. doi: 10.13700/j.bh.1001-5965.2019.0331(in Chinese)

昼夜温度变化对燃油箱空余空间氧浓度的影响

doi: 10.13700/j.bh.1001-5965.2019.0331
基金项目: 

国家自然科学基金 U1933121

工信部民机专项 MIIT Joint Assembly (2016) No. 37, Serial No. 9

中央高校基本科研业务费专项资金 

江苏省科研与实践创新计划 KYCX19_0198

江苏高校优势学科建设工程 

详细信息
    作者简介:

    张瑞华  女, 博士研究生。主要研究方向:运输类飞机适航技术

    刘卫华  男, 博士, 教授, 博士生导师。主要研究方向:飞行器环境控制与生命保障工程

    通讯作者:

    刘卫华, E-mail:liuwh@nuaa.edu.cn

  • 中图分类号: V228;TQ021.4

Influence of diurnal temperature changes on oxygen concentration in free space of fuel tank

Funds: 

National Natural Science Foundation of China U1933121

Special Project For Civil Aircraft of Ministry of Industry and Information Technology MIIT Joint Assembly (2016) No. 37, Serial No. 9

the Fundamental Research Funds for the Central Universities 

Jiangsu Province Research and Practice Innovation Program KYCX19_0198

Superior Discipline Construction Project in Jiangsu Universities 

More Information
  • 摘要:

    燃油箱空余空间氧浓度变化规律的确定是惰化系统的设计基础,但影响燃油箱空余空间氧浓度因素很多,当前人们对于昼夜温度变化这一实际现象还缺少必要的分析计算。为此,以某型飞机中央翼燃油箱为研究对象,依据FAR25适航条款中昼夜温度变化的相关规定,建立理论仿真模型,利用实验数据对模型进行验证,探讨燃油箱空余空间氧浓度与昼夜温度变化之间的对应关系,并分析昼夜温度变化范围、载油率、初始氧浓度、溶解氧析出等因素对燃油箱空余空间氧浓度的影响,提出满足适航条款要求的夜间停机前燃油箱初始氧浓度限值。研究结果表明:昼夜温度的变化范围、载油率、初始氧浓度等因素对燃油箱空余空间氧浓度变化规律影响程度有所不同;停机前燃油箱初始氧浓度限值应该低于最低氧浓度限值0.5%~1%。研究成果将对惰化系统设计、燃油箱可燃性暴露时间计算具有较好的参考价值。

     

  • 图 1  燃油箱简化模型

    Figure 1.  Simplified fuel tank model

    图 2  昼夜温度变化曲线

    Figure 2.  Diurnal temperature change curves

    图 3  经昼夜温度变化燃油箱空余空间氧浓度变化曲线

    Figure 3.  Oxygen concentration variation curves of free space in fuel tank through diurnal temperature changes

    图 4  不同昼夜温度变化下燃油箱空余空间氧浓度的变化曲线

    Figure 4.  Variation curves of oxygen concentration in free space of fuel tank at different diurnal temperatures

    图 5  不同载油率下燃油箱空余空间氧浓度的变化曲线

    Figure 5.  Variation curves of oxygen concentration in free space of fuel tank under different oil loading rates

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出版历程
  • 收稿日期:  2019-06-25
  • 录用日期:  2019-08-03
  • 网络出版日期:  2020-05-20

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