大型平铺贮箱卫星的液体晃动模型与晃动力矩分析  

Liquid Sloshing Model and Sloshing Torque Analysis of Large Satellite with Tiled Tank

作　　者：陆国平[1,2] 李道奎[1] 曾擎[2] 

机构地区：[1]国防科学技术大学航天与材料工程学院,湖南长沙410073 [2]上海卫星工程研究所,上海200240

出　　处：《上海航天》2011年第1期18-22,共5页Aerospace Shanghai

摘　　要：针对高轨气象卫星的远地点发动机点火过程中贮箱内液体晃动与星体耦合动力学问题,根据流体力学及小幅液体晃动理论,建立可等效的液体晃动力学模型和姿态耦合动力学模型,分析了大型平铺贮箱内液体晃动产生的干扰力矩。研究表明:在远地点发动机点火阶段,液体晃动对卫星将产生较大干扰力矩。Aim to the liquid sloshing of tank in the process of the motor firing and satellite rigid-body coupling dynamics for the GEO meteorological satellite,the equivalent liquid sloshing model and attitude coupling dynamics model were established according the theory of hydromechanics and small fluid sloshing in this paper.The disturbance torque caused by the liquid sloshing in large tiled propellant tank was analyzed.The study results showed that the certain disturbance torque would be caused by the liquid sloshing during the motor firing phase.

关 键 词：流体力学 平铺贮箱 液体晃动 单摆 晃动力矩 

分 类 号：V414.1[航空宇航科学与技术—航空宇航推进理论与工程]