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弹箭与制导学报 >

2024 , Vol. 44 >Issue 1: 84 - 88

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.01.013

光电导引头内部结雾现象机理分析

  • 冯涛 1 ,
  • 史明东 2 ,
  • 张鹏 3 ,
  • 豆永鹏 3 ,
  • 吴卉 1 ,
  • 梁晓博 2 ,
  • 屈军利 2
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  • 1 西安现代控制技术研究所,陕西 西安 710065
  • 2 西安导引科技有限责任公司,陕西 西安 710065
  • 3 陆军装备部驻西安地区军代室,陕西 西安 710065

冯涛(1979—),男,正高级工程师,博士,研究方向:光电制导技术。

收稿日期: 2024-01-31

  网络出版日期: 2024-12-28

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Analysis on the Mechanism of Fogging Inside the Photoelectric Seeker

  • FENG Tao 1 ,
  • SHI Mingdong 2 ,
  • ZHANG Peng 3 ,
  • DOU Yongpeng 3 ,
  • WU Hui 1 ,
  • LIANG Xiaobo 2 ,
  • QU Junli 2
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  • 1 Xi’an Modern Control Technology Research Institute,Xi’an 710065,Shaanxi,China
  • 2 Xi’an Guidance Technology Co.,Ltd.,Xi’an 710065,Shaanxi,China
  • 3 Xi’an Military Representative Bureau of Army Armament Department,Xi’an 710065,Shaanxi,China

Received date: 2024-01-31

  Online published: 2024-12-28

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摘要

通过理论分析和实验测试对温度循环条件下机载导弹光电导引头低温结雾现象形成机理进行了研究,阐明了密封结构在温度循环过程中的呼吸作用是导致导引头内部结雾现象的主要原因,进一步推导了交变温度条件下密封结构通过呼吸作用引入水汽含量与结构泄漏率的关系,表明呼吸作用引入水汽含量与产品泄漏率成指数级正相关,泄漏率越高,单次呼吸作用引入水汽含量越高,越容易产生结雾现象;当泄漏率低于1×10-6 Pa·m3/s时,能够有效降低温度循环过程中的呼吸作用导致的气体交换速度,将温度循环筛选中气体交换总量控制在可接受的范围内;并针对不同泄漏率产品产生结雾现象所需温度循环次数进行了实验验证。

关键词： 光电导引头; 密封结构; 温度循环; 呼吸作用; 结雾

本文引用格式

冯涛 , 史明东 , 张鹏 , 豆永鹏 , 吴卉 , 梁晓博 , 屈军利 . 光电导引头内部结雾现象机理分析[J]. 弹箭与制导学报, 2024 , 44(1) : 84 -88 . DOI: 10.15892/j.cnki.djzdxb.2024.01.013

Abstract

The mechanism of low-temperature fogging in the photoelectric seeker of airborne missile is analyzed through theoretical analysis and experimental test. It is clarified that the respiration of the sealing structure during the temperature cycle is the main reason for the fogging phenomenon inside the seeker. The relationship between the water vapor content introduced by respiration and the structural leakage rate of the sealing structure under alternating temperature conditions is further deduced, which shows that the water vapor content introduced by respiration is exponentially positively correlated with the product leakage rate. The higher the leakage rate, the more water vapor is introduced by a single respiration. The higher the content, the easier it is to produce fogging phenomenon. exchange rate, and the easier the fog formation. When the leakage rate is lower than 1×10-6 Pa·m3/s, it can effectively reduce the gas exchange rate caused by respiration during the temperature cycle, and control the total gas exchange amount during temperature cycle screening within an acceptable range. Experimental verification was conducted on the number of temperature cycles required to produce fogging phenomenon under different leakage rates.

Key words： photoelectric seeker; sealing structure; temperature cycle; respiration; fogging

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