上海航天（中英文）2025，Vol.42Issue(z1)：245-251,7.DOI:10.19328/j.cnki.2096-8655.2025.S1.030
低温末级长时间滑行过程氢箱主动排气温度压力控制研究
Research on Temperature and Pressure Control of Active Vent in Hydrogen Storage Tank for Cryogenic Upper Stage during Long-duration Coasting Phase
摘要
Abstract
For the hydrogen/oxygen upper stage that long-duration coasting in orbit,the temperature and pressure of the propellant continue to rise under the continuous action of external heat flow.To ensure the safety of the storage tank structure and main engine restart,it is necessary to predict and control the hydrogen tank pressure and propellant temperature.A thermodynamic model of liquid hydrogen storage tank was established.Simulation analysis was conducted on the self-pressurization rate of liquid hydrogen storage tank under different gas-liquid interface states under microgravity.The analysis showed that the larger the liquid phase contact wall area,the smaller the self-pressurization rate of liquid hydrogen storage tank;And the influence of different initial temperature,pressure control bands on design parameters such as active venting frequency and liquid hydrogen evaporation rate was analyzed,providing reference for the tank pressure control during the long-duration coasting phase of the cryogenic upper stage.关键词
低温末级/长时间滑行/压力控制/排气Key words
cryogenic upper stage/long-duration coasting/pressure control/vent分类
航空航天引用本文复制引用
许安易,徐帅,孙培杰,李鹏,徐焘,张亮..低温末级长时间滑行过程氢箱主动排气温度压力控制研究[J].上海航天（中英文）,2025,42(z1):245-251,7.基金项目
装备预先研究专用技术(3050602) （3050602）
