航空炸弹引信极端条件惯性发火性能研究

陆俊桦; 王远超; 岳明凯; 张骢; 张靖楚

doi:10.15892/j.cnki.djzdxb.2025.06.009

弹箭与制导学报 >

2025 , Vol. 45 >Issue 6: 1029 - 1037

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.06.009

学术文章

航空炸弹引信极端条件惯性发火性能研究

陆俊桦 ^,¹ ,
王远超 ² ,
岳明凯 ¹ ,
张骢 ^,¹^,³^,^* ,
张靖楚 ¹

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¹ 沈阳理工大学装备工程学院,辽宁沈阳 110159
² 上海机电工程研究所,上海 201109
³ 北京理工大学机电学院,北京 100081

张骢(1990—),男,副教授,博士研究生。Email:zcbxl@sylu.edu.cn。

陆俊桦(1997—),男,硕士研究生。Email:291563995@qq.com。

收稿日期: 2024-09-05

网络出版日期: 2026-01-24

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Research on Inertial Ignition Performance of Aerial Bomb Fuze under Extreme Conditions

LU Junhua ^,¹ ,
WANG Yuanchao ² ,
YUE Mingkai ¹ ,
ZHANG Cong ^,¹^,³^,^* ,
ZHANG Jingchu ¹

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¹ School of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,Liaoning,China
² Shanghai Institute of Mechanical and Electrical Engineering,Shanghai 201109,China
³ School of Electromechanical Engineering,Beijing Institute of Technology,Beijing 100081,China

Received date: 2024-09-05

Online published: 2026-01-24

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摘要

引信发火机构决定了航空炸弹在极端着地条件下能否顺利起爆。为对引信机械结构进行优化设计,针对航空炸弹引信惯性发火机构,建立航空炸弹以不同投放条件水平撞击土壤惯性发火机构的动力学模型,并应用经验公式进行加速度计算。利用有限元分析软件进行动力学仿真验证,以验证所建立模型的准确性,并对炸弹撞击地面的过程进行数值模拟,以验证加速度计算经验公式的适用性。仿真结果显示,动力学模型的计算结果与仿真结果一致,但经验公式计算的加速度存在较大误差。随后对撞击土壤加速度计算方法进行了改进,显著减小了计算结果与仿真结果之间的误差,使得发火时间的最大误差从106.73%降至5.57%。本研究为惯性发火机构的设计优化和性能评估提供参考依据。

关键词： 惯性发火机构; 动力学模型; 撞击土壤; 航空炸弹; 数值模拟

本文引用格式

陆俊桦 , 王远超 , 岳明凯 , 张骢 , 张靖楚 . 航空炸弹引信极端条件惯性发火性能研究[J]. 弹箭与制导学报, 2025 , 45(6) : 1029 -1037 . DOI: 10.15892/j.cnki.djzdxb.2025.06.009

Abstract

The fuze ignition mechanism determines whether an aerial bomb can successfully detonate under extreme impact conditions.In order to optimize the mechanical structure of the fuze,a dynamic model of the inertial ignition mechanism in the air bomb fuze is constructed.The model simulates the work of inertial ignition mechanism when the airborne bomb hits the soil in a horizontal attitude under different delivery conditions,and the acceleration is calculated by empirical formula.In order to verify the accuracy of the established dynamic model,finite element analysis software is used for dynamic simulation.In order to verify the applicability of the empirical formula for acceleration calculation,a detailed numerical simulation is carried out on the process of aircraft bomb impacting the ground.The simulation results show that the calculation results of the dynamic model are highly consistent with the simulation results,which proves the validity of the model.However,through comparison,it is found that there is a large error between the acceleration calculated by the empirical formula and the simulation results.In order to improve this problem,the acceleration calculation method of soil impact is studied and improved.By optimizing the calculation method,the error between the calculation results and the simulation results is significantly reduced.After improvement,the maximum error of ignition time is reduced from 106.73% to 5.57%.This study provides a reference for the design optimization and performance evaluation of inertial ignition mechanism.

Key words： inertial ignition mechanism; dynamic model; impact on soil; bomb; numerical simulation

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