基于微型槽和充氦气的惯性平台散热效果分析  

Heat dissipation effect analysis of inertial platform based on micro-tank and helium-filling

作　　者：徐峰涛 王汀[2] 张凯 XU Fengtao;WANG Ting;ZHANG Kai(China Academy of Launch Vehicle Technology,Beijing 100076,China;Beijing Institute of Aerospace Control Devices,Beijing 100039,China)

机构地区：[1]中国运载火箭研究院,北京100076 [2]北京航天控制仪器研究所,北京100039

出　　处：《中国惯性技术学报》2024年第3期219-225,共7页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(52276169)。

摘　　要：惯性平台系统温度过高和剧烈变化是影响惯性导航系统导航精度的重要因素。为提升惯性平台系统的散热能力,提出了基于微型槽和充氦气的改进散热方法,并对散热效果进行分析。以某平台系统结构为对象,根据惯性平台系统传热机理,分析了当前惯性平台散热能力较差的原因。针对微型槽增大面积、填充氦气等散热方法开展数值仿真分析,并通过缩比样件的散热实验进行验证。实验结果表明,在强迫对流的基础上将两种方法结合使用,可使平台温度较改进前降低9.7℃,有效证明了两种散热方法的可行性及散热效果,为后续惯性平台系统的热设计提供指导。The high temperature and drastic change of the inertial platform system are the important factors that affect the navigation accuracy of inertial navigation system.In order to improve the heat dissipation capacity of inertial platform system,an improved heat dissipation method based on micro-tank and helium-filling is proposed,and the heat dissipation effect is analyzed.Taking a platform system as the research object,according to its heat transfer mechanism,the reasons of the poor heat dissipation capacity of the current inertial platform are analyzed.The numerical simulation analysis is carried out on the heat dissipation methods such as increasing the heat dissipation area of the micro-tank and helium-filling,and the heat dissipation test is verified by the scaled sample.The results show that the combined use of the two methods on the basis of forces convection can reduce the platform temperature by about 9.7℃compared with that before the improvement,which effectively proves the feasibility and heat dissipation effect of the two methods,and provides guidance for the thermal design of the inertial platform system.

关 键 词：惯性平台 温度场 数值仿真 热设计 

分 类 号：U666.1[交通运输工程—船舶及航道工程]