摘要
从被动防隔热技术、混合控压技术、TVS排气技术、主动制冷技术等四个方面对国外低温推进剂蒸发量控制方面的研究状况进行了分类和总结。调研结果表明:(1)采用MLI材料对贮箱进行绝热处理,可将蒸发损失率降低至1.0%/天,当采用VDMLI时,可进一步降低推进剂蒸发量损失;(2)增大喷射器喷射流体速度可有效破坏箱内热分层实现控压目的;(3)很小的过冷度就可以保证低温推进剂较长时间在轨无损储存;(4)喷雾棒型热力学排气系统比传统热力学排气系统能够更有效地实现低温贮箱的压力控制。本文工作可为我国深空探测低温推进剂管理提供技术参考。
The abroad cryogenic fluid managements are classified and summary according to passive insulation technique,mixing pressure control technique,passive thermodynamic vent system technique and active refrigeration technique.Some valuable conclusions are obtained as follows：（1） Applying multilayer insulation to storage tanks,the evaporation loss can reduce to 1.0％ per day.If variable density multilayer insulation is used to replace multilayer insulation,the evaporation loss can receive further reduce; （2） Increasing injection velocity has a good effect on destroying thermal stratification and controlling storage tank pressure ; （3） Propellant with little subcooling can be safety stored inorbit for long time; （4） Compared to traditional thermodynamic vent system,the spray-bar thermodynamic vent system can efficiently control storage tank pressure.This paper can briefly provide a technical reference for deep space exploration of our country in cryogenic fluid management.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2014年第3期254-261,共8页
Journal of Astronautics
基金
国家自然科学基金(51376142)
航天低温推进剂技术国家重点实验室开放课题(SKLTSCP1212)
关键词
低温推进剂
热分层
压力控制
过冷度
TVS
Cryogenic propellant
Thermal stratification
Pressure control
Subcooling
Thermodynamic vent system
