基于热容法测量的卫星推进剂剩余量仿真分析  

Simulation Analysis of Satellite Propellant Estimation Based on Thermal Propellant Gauging System

作　　者：黄滨[1] 陈佳呈 李文[2] 刘锦涛[2] 王璐[1] HUANG Bin;CHENG Jiacheng;LI Wen;LIU Jintao;WANG Lu(Ocean College,Zhejiang University,Zhoushan 316021,China;Beijing Institute of Control Engineering,Beijing 100094,China)

机构地区：[1]浙江大学海洋学院,舟山316021 [2]北京控制工程研究所,北京100094

出　　处：《空间控制技术与应用》2024年第5期101-112,共12页Aerospace Control and Application

基　　金：国家自然科学基金资助项目(U23B20107);北京控制工程研究所先进空间推进技术实验室开放基金课题资助(LabASP-2023-04)。

摘　　要：热容法是具有主动热源输入的卫星推进剂剩余量测量方法,该方法是通过在贮箱表面安装特定功率加热片同时获取测点温度变化数据的方式推算推进剂剩余量.为获得微重力环境下准确的热分析模型,针对板式贮箱在轨环境下的气液分布特点,基于计算流体力学(computational fluid dynamics,CFD)方法对贮箱热容法进行数值仿真,研究不同加速度条件、填充比与测点位置对热容法精度的影响.结果表明,在微重力环境下,推进剂受微重力影响沿导流板向上爬升,推进剂浸润的贮箱壁面面积更大,从而导致贮箱的温度分布与地面工况存在明显差异.通过研究发现,在微重力工况下,当测点分布于远离热源处时,测点的温度分辨率更高,热容法的测量精度更高.The thermal propellant gauging system(TPGS)method is a method for measuring the residual amount of satellite propellant with active heat source input.It calculates the residual amount of propellant according to the temperature variation data of the measuring point when the tank heated by a specific power heating plate,and the measuring point is attached on the tank wall.In order to obtain an accurate thermal analysis model based on the gas-liquid distribution characteristics of plate tank in orbit in the microgravity environment,numerical simulation of the TPGS method is carried out with computational fluid dynamics(CFD)method to analyze the influence of different acceleration conditions,filling ratio and measuring point position on the accuracy of the TPGS method.The results show that the propellant climbs up along the deflector in the microgravity condition,and the wall area covered by the fuels larger,which results in the temperature variation in microgravity condition is obvious different compared with ground condition.It is found that,in the microgravity condition,when the measuring points are distributed away from the heat source,the temperature resolution of the measuring points is higher,and the measurement accuracy of the TPGS method is higher.

关 键 词：热容法 微重力环境 板式表面张力贮箱 推进剂 剩余量测量方法 

分 类 号：V432[航空宇航科学与技术—航空宇航推进理论与工程]