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

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

1.
中国航发沈阳发动机研究所，沈阳 110015
2.
西北工业大学航空学院，西安 710072
3.
中国航发动力股份有限公司，西安 710021

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
计量
- 文章访问数: 107
- HTML浏览量: 56
- PDF量: 18
- 被引次数: 0
出版历程
- 收稿日期: 2022-06-20
- 网络出版日期: 2024-05-23

Research on simulation and evaluation technology of aero-engine vulnerability

1.
Shenyang Engine Research Institute，Aero Engine Corporation of China，Shenyang 110015，China
2.
School of Aeronautics，Northwestern Polytechnical University，Xi’an 710072，China
3.
Aviation Power Compony Limited，Aero Engine Corporation of China，Xi’an 710021，China

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

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。
- 生存力 /
- 易损性 /
- 损伤模式 /
- 杀伤概率 /
- 缩减设计
Abstract:
In order to improve the combat survivability of aircraft, a computational simulation method for aircraft engine vulnerability assessment was proposed. Taking a certain type of engine as an object, the lethal components of the engine were identified, the vulnerability assessment model of the engine was established, then the projectile was selected as a typical threat, and the vulnerability simulation analysis software was used to quantify the vulnerability indicators such as the engine kill probability. According to the calculation results of the developed vulnerability calculation software, for direction 1 and direction 7, the level B kill probability of compressor inner casing, low-pressure and high-pressure rotating shafts was high. Considering possible measures to reduce the vulnerability of the engine, suggestions for improving the vulnerability design of the engine were put forward, and the improvement effect was analyzed by calculating an example. The proposed method has guiding significance for aero-engine protection and survivability design.
- survivability /
- vulnerability /
- damage mode /
- kill probability /
- reduction design

HTML

图 1 射击线扫描原理图

Figure 1. Schematic diagram of firing line scaning

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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

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图 3 飞机有限元网格模型

Figure 3. Finite element grid model of aircraft

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图 4 发动机有限元网格模型

Figure 4. Finite element grid model of engine

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图 5 发动机内部有限元网格模型

Figure 5. Finite element grid model of engine interior

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图 6 攻击方向定义

Figure 6. Attack direction definition

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图 7 发动机的暴露面积

Figure 7. Exposed area of engine

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图 8 发动机杀伤概率

Figure 8. Kill probability of engine

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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

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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

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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

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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	P_k/h	A_v/m²	A_p/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

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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	P_k/h	A_v/m²	A_p/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

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