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航空发动机易损性仿真与评估技术研究

李兆红 邢洋 裴扬 柴政 郭鹏超

李兆红, 邢洋, 裴扬, 等. 航空发动机易损性仿真与评估技术研究[J]. 航空动力学报, 2024, 39(10):20220442 doi: 10.13224/j.cnki.jasp.20220442
引用本文: 李兆红, 邢洋, 裴扬, 等. 航空发动机易损性仿真与评估技术研究[J]. 航空动力学报, 2024, 39(10):20220442 doi: 10.13224/j.cnki.jasp.20220442
LI Zhaohong, XING Yang, PEI Yang, et al. Research on simulation and evaluation technology of aero-engine vulnerability[J]. Journal of Aerospace Power, 2024, 39(10):20220442 doi: 10.13224/j.cnki.jasp.20220442
Citation: LI Zhaohong, XING Yang, PEI Yang, et al. Research on simulation and evaluation technology of aero-engine vulnerability[J]. Journal of Aerospace Power, 2024, 39(10):20220442 doi: 10.13224/j.cnki.jasp.20220442

航空发动机易损性仿真与评估技术研究

doi: 10.13224/j.cnki.jasp.20220442
详细信息
    作者简介:

    李兆红(1976-),男,研究员,硕士,主要从事航空发动机总体设计技术研究

  • 中图分类号: V231.3

Research on simulation and evaluation technology of aero-engine vulnerability

Funds: WU Zongyi, FANG Yangwang, WEN Ying, et al. A study on missile damage effectiveness based on quadratic effect in jamming[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2010, 30(1): 101-104. (in Chinese)
  • 摘要:

    为提高飞机的作战生存力,提出了一种航空发动机易损性评估的计算仿真方法。以某型发动机为对象,对发动机致命性部件进行识别,建立了发动机易损性评估模型,选取弹丸作为典型威胁,使用易损性仿真分析软件对发动机杀伤概率等易损性指标进行量化计算。根据开发的易损性计算软件计算结果,方向1和方向7,压气机机匣、低压转子和高压转子的B级杀伤概率较高。考虑可能落实的发动机易损性缩减措施,提出针对发动机的易损性设计改进建议,并通过算例计算分析改进效果。提出的方法对于航空发动机防护以及生存力设计有指导意义。

     

  • 图 1  射击线扫描原理图

    Figure 1.  Schematic diagram of firing line scaning

    图 2  发动机各个部件的条件杀伤概率函数

    Figure 2.  Conditional kill probability function for each engine component

    图 3  飞机有限元网格模型

    Figure 3.  Finite element grid model of aircraft

    图 4  发动机有限元网格模型

    Figure 4.  Finite element grid model of engine

    图 5  发动机内部有限元网格模型

    Figure 5.  Finite element grid model of engine interior

    图 6  攻击方向定义

    Figure 6.  Attack direction definition

    图 7  发动机的暴露面积

    Figure 7.  Exposed area of engine

    图 8  发动机杀伤概率

    Figure 8.  Kill probability of engine

    图 9  机匣加厚对B级杀伤概率的影响

    Figure 9.  Effect of casing thickening on class B kill probability

    图 10  蒙皮加厚对B级杀伤概率的影响

    Figure 10.  Effect of skin thickening on class B kill probability

    表  1  弹丸的基本参数

    Table  1.   Basic parameters of projectile

    参数 数值及说明
    强度/MPa 345
    弹性模量/GPa 200
    材料声速/(m/s) 6350
    材料密度/(kg/m3 7850
    弹丸直径/mm 24
    弹丸质量/g 35.5
    弹丸形状 球形
    下载: 导出CSV

    表  2  方向1发动机部件B级易损性指标

    Table  2.   Direction 1 class B vulnerability indicator of engine components

    部件名称 Pk/h Av/m2 Ap/m2
    压气机机匣 0.139403 0.000349 0.0025
    低压转子 0.131038 0.014087 0.1075
    高压转子 0.128352 0.012514 0.0975
    燃油控制装置 0.070358 0.003518 0.05
    燃烧室机匣 0.068936 0.001379 0.02
    下载: 导出CSV

    表  3  方向7发动机部件B级易损性指标

    Table  3.   Direction 7 class B vulnerability indicator of engine components

    部件名称 Pk/h Av/m2 Ap/m2
    燃油控制装置 0.257173 0.092582 0.36
    压气机机匣 0.194254 0.026224 0.135
    低压转子 0.111964 0.004758 0.0425
    高压转子 0.100821 0.000504 0.005
    涡轮机匣 0.0573 0.003438 0.06
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-06-20
  • 网络出版日期:  2024-05-23

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