| 摘要: |
| 本文梳理了低温推进剂空间流体管理（CFM）技术特征，调研了空间搭载试验研究进展，基于技术成熟度提升需求，揭示了25种CFM技术对重力的依赖关系。对比分析了多种微重力获取方法的技术特征，基于CFM技术验证目标对开展微重力试验提供了方案建议：常规低温工质的试验无法表征液氢规律，应将液氢与液氧、液甲烷分类研究；可采用液氮替代液氧、液甲烷设计空间搭载试验系统；而液氢必须采用真实流体开展搭载试验；基于空间飞行器的搭载试验是验证各类CFM技术有效性不可替代的方案；在开展单项CFM技术研究的同时，应尽早规划，开展基于轨道飞行器的CFM技术综合验证平台设计。 |
| 关键词: 低温推进剂 蒸发量控制 多层绝热 气液分离 微重力 |
| DOI： |
| Received:December 22, 2020Revised:March 15, 2021 |
| 基金项目:国家自然科学基金（51976151）和北京强度环境研究所基金项目资助。 |
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| Gravity-dependence Analysis of Cryogenic Fluid Management Techniques in Space and Experimental Scheme Suggestions |
|
Wang Lei1, Jia Zhouxia2, Qu Miao1, Shangguan Shi1, Ma Yuan1, Li Yanzhong1
|
| (1.Institute of Refrigeration and Cryogenic Engineering, Xi'an Jiaotong University;2.Science and Technology on Reliability and Environment Engineering Laboratory, Beijing Institute of Structure and Environment Engineering) |
| Abstract: |
| The features of microgravity cryogenic fluid management (CFM) technologies were analyzed in this study, and existing space experiments on CFM technologies were reviewed. Based on the upgrade requirements of technology readiness levels, gravity-dependence analysis of 25 CFM techniques was performed. Moreover, several approaches to acquire low-gravity or microgravity environments are presented and their characteristics are compared herein. To realize further technique verifications, a series of valuable suggestions on space experimental scheme designs are provided. It should be noted that the properties of liquid hydrogen in space cannot be represented through experiments using other alternative cryogenic fluids. Instead, liquid hydrogen should be treated with special regard, which is different from liquid oxygen and liquid methane. In space-based test designs for liquid oxygen and liquid methane, liquid nitrogen can be used as a substitute in a convenient and safe view. However, for liquid hydrogen tests, hydrogen itself should be adopted. In addition, microgravity tests based on spacecraft platforms play an irreplaceable role in the upgrading of CFM techniques. In addition to the research on single CFM techniques, spacecraft-based test platforms should be designed in a timely manner. |
| Key words: cryogenic propellant boil-off control multi-layer insulation gas-liquid separation microgravity |
