超低轨环境实验系统设计与研究
Design and Research of a VLEO Environmental Experiment System
摘要
Abstract
This study addresses the requirements for ground-based simulation of the very low Earth orbit atmospheric environment and completes the overall design of the experimental system,the development of a high-speed atomic oxygen generation device,and the performance validation of key modules.By analyzing the typical flow characteristics of the very low earth orbit(VLEO)environment,the essential conditions for ground simulation are identified,including a high-speed atomic oxygen beam,a rarefied free-molecular flow regime,and controllable particle velocity and composition.Based on these requirements,an integrated experimental platform is established,consisting of a helicon plasma source,a velocity control unit,a particle separation module,and a neutralization system.Experimental results demonstrate that the electro-magnetic coupled velocity control enables stable selection and output of target velocity ranges;target current measurements reveal a bimodal velocity structure of the helicon plasma plume;and neutralization experiments confirm that a high-purity,high-speed atomic oxygen flow can be obtained with a tungsten filament current of approximately 3 A.Overall,this work establishes a ground-based VLEO environment simulation platform with high stability and controllability and verifies the feasibility of high-speed atomic oxygen generation.The platform can support capture performance tests of air-breathing electric propulsion intakes,thruster-intake matching experiments,and atomic oxygen erosion studies of materials,providing important support for the development of key technologies for VLEO spacecraft.关键词
超低轨道/原子氧/吸气式电推进/自由分子流/地面模拟系统Key words
VLEO/atomic oxygen/air-breathing electric propulsion/free molecular flow/ground simulation system分类
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孙斌,夏广庆,夏博涵,刘旭辉,韩道满..超低轨环境实验系统设计与研究[J].空间控制技术与应用（中英文）,2026,52(3):34-43,10.基金项目
国家自然科学基金资助项目(12175032,12275044,12405290,12402327),国家重点研发计划(2020YFC2201100,2024YFE0213500),中央高校基本科研业务费(DUT24ZD106),辽宁省科技计划联合计划(2023JH2/101700285),河北省科技计划(246Z2301G),中国科协青年科技人才培育工程博士生专项,北京市高效能及绿色宇航推进工程技术研究中心开放基金课题(LabASP-202410). National Natural Science Foundation of China(Grant Nos.12175032,12275044,12405290,and 12402327),the National Key Research and Development Program of China(Grant Nos.2020YFC2201100 and 2024YFE0213500),the Fundamental Research Funds for the Central Universities(Grant No.DUT24ZD106),the Joint Program of Liaoning Provincial Science and Technology Plan(Grant No.2023JH2/101700285),the Hebei Provincial Science and Technology Program(Grant No.246Z2301G),the Doctoral Special Program of the Young Science and Technology Talent Cultivation Project of the China Association for Science and Technology,and the Open Fund Project of Beijing Engineering Technology Research Center for High-Efficiency and Green Aerospace Propulsion(Grant No.LabASP-202410). （12175032,12275044,12405290,12402327）
