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兵工学报 ›› 2025, Vol. 46 ›› Issue (6): 240463-.doi: 10.12382/bgxb.2024.0463

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快速烤燃引信安全性分析与等效试验方法

娄文忠1, 阚文星1, 冯恒振1,*(), 范晨阳2, 吕斯宁1, 卢奕1   

  1. 1 北京理工大学 机电学院, 北京 100081
    2 西安机电信息技术研究所, 陕西 西安 710065
  • 收稿日期:2024-06-17 上线日期:2025-06-28
  • 通讯作者:
  • 基金资助:
    机电动态控制重点实验室开放课题基金项目(6142601012304); 中国科协创新融合学会联合体青年人才托举工程项目(YESS20220385)

Safety Analysis and Equivalent Test Method for Fuzes during Fast Cook-off

LOU Wenzhong1, KAN Wenxing1, FENG Hengzhen1,*(), FAN Chenyang2, LU Sining1, LU Yi1   

  1. 1 School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
    2 Xi’an Institute of Electromechanical Information Technology, Xi’an 710065, Shaanxi, China
  • Received:2024-06-17 Online:2025-06-28

摘要:

引信热防护技术与等效试验技术是提升引信快速烤燃安全性与热防护多轮优化设计效率的关键。根据引信一维热传导模型,构建炸药及引信壳体径向温度分布方程,建立基于铝-硅气凝胶的航空炸弹引信热防护模型,通过引信快速烤燃仿真模拟研究,获得引信内部炸药经历20min 800℃烤燃环境的温度变化曲线。隔铝-硅气凝胶的临界厚度为3mm,炸药最终温度比其5s爆发点(280℃)低87.8℃,可以保证引信的热安全性。以铝-硅气凝胶包覆的引信为验证主体,结合快速烤燃标准试验方法建立基于仿真分析-高温火焰喷射试验平台的引信快速烤燃等效试验方法。试验结果表明,标准试验的引信易损点测温数据与仿真数据对比,精度优于91%;等效试验下引信易损点测量温度与标准试验测量结果对比,精度优于95%。试验结果表明,标准试验的引信易损点测温数据与仿真数据对比,标准试验精度优于91%;等效试验下引信易损点测量温度与标准试验测量结果对比,等效试验精度优于95%。

关键词: 引信, 快速烤燃, 热防护, 仿真分析, 等效试验

Abstract:

The thermal protection technology and equivalent testing technology are the key to improving the safety of fuzes during fast cook-off and the iterative efficiency of multiple rounds of optimization design of thermal protection.According to the one-dimensional fuze heat conduction model,the theoretical equations for the radial temperature distributions of explosive and fuze shell are constructed.An aluminum-silicon aerogel thermal protection model is established for aerial bomb fuze.The simulation study on the fast cook-off of fuze is carried out to obtain the temperature change curve of the explosive inside the fuze undergoing a 20-minute heating environment at 800℃.The critical thickness of thermal protection material is 3 mm,and the final temperature of explosive is 87.8℃ lower than its 5 s explosion temperature (280℃),which can ensure the thermal safety of fuze.Taking the fuze coated with aluminum-silicon aerogel as the verification subject,an equivalent test method for the fast cook-off of fuze is established based on simulation analysis and high-temperature flame injection test platformm,which is combined with the standard fast cook-off test method.Test results show that when comparing the temperature measurement data of fuze vulnerable points in standard tests with simulation data,the accuracy of the standard test results exceeds 91%.When comparing the measured temperature of fuze vulnerable points in equivalent tests with the measurement results of standard tests,the accuracy of the equivalent test results exceeds 95%.

Key words: fuze, fast cook-off, thermal protection, simulation analysis, equivalent test

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