电磁弹射微重力装置的仿真分析  

SIMULATION AND ANALYSIS FOR THE MICROGRAVITY EXPERIMENT FACILITY BY ELECTROMAGNETIC LAUNCH

作　　者：张建泉[1,2,3] 董文博 张永康[1] 张鑫 李绪志[1,2,3] 安翼[3,4] 吴晗[4] 陈启生 ZHANG Jianquan;DONG Wenbo;ZHANG Yongkang;ZHANG Xin;LI Xuzhi;AN Yi;WU Han;CHEN Qisheng(Technology and Engineering Center for Space Utilization,Chinese Academy of Sciences,Beijing 100094,China;Key lab of Space Utilization,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院空间应用工程与技术中心,北京100094 [2]中国科学院太空应用重点实验室,北京100094 [3]中国科学院大学,北京100049 [4]中国科学院力学研究所,北京100190

出　　处：《力学与实践》2022年第6期1381-1393,共13页Mechanics in Engineering

基　　金：载人航天工程—空间应用系统(412021000031);中科院科研仪器研制项目(YJKYYQ20180017);中国科学院青年创新促进会;国家自然科学基金(11772344)资助。

摘　　要：电磁弹射微重力实验装置是地基微重力模拟技术的前沿研究方向,此类装置的主要问题是弹射过程中电机、结构、气动力等引起的振动和噪声,影响实验舱的微重力水平。本文针对该装置的功能和指标需求,进行了运动规划和动力学建模,研究了实验舱在电磁推力、轨道不平顺、气动噪声等综合激扰下的振动响应,通过仿真分析,评估内舱可以达到4 s微重力时间和10-5g的微重力水平。该工作为电磁弹射微重力装置的设计提供了理论依据。Microgravity experiment facility by electromagnetic launch is the frontier in the area of the ground-based microgravity simulation,but its challenge is the problem of vibration and noise caused by the motor thrust,mechanical structure irregularity and aerodynamics,which affects the microgravity level of experiment cabin.Base on the mechanics of a microgravity drop tower,we analyze the motion kinematics and dynamics,and study the vibration response of the cabin caused by the combined effects of motor thrust,rail irregularity,and aerodynamic noise.By using simulations on aerodynamics,vibration and acoustics,we get the estimated results of microgravity level of the experiment cabin.The microgravity time is about 4 seconds and the microgravity level is 10^(−5)g for the inside-cabin.This work provides the theoretical analysis for the microgravity facility design and performance assessment.

关 键 词：微重力装置 电磁弹射 动力学与控制 气动力分析 轮轨振动分析 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] O313[理学—一般力学与力学基础] TP391.9[理学—力学]