旋转固体火箭发动机飞行器章动不稳定机理述评  

A review of nutation instability mechanism on spinning solid rocket motor flight vehicle

作　　者：郜冶 刘平安[1] 杨丹 

机构地区：[1]哈尔滨工程大学航天工程系,哈尔滨150001

出　　处：《固体火箭技术》2011年第1期14-17,22,共5页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(10972063);中央高校基本科研基金(HEUCF100203)

摘　　要：针对旋转固体火箭发动机发射小卫星最末级出现的章动现象,分析了其不稳定机理。根据实际观测的飞行数据,分析了飞行器章动不稳定性的特点,给出了几种可能导致飞行器发生侧向角运动的不稳定性机理,并结合实际情况,对各种机理进行了分析。结果显示,飞行器不稳定运动的主要原因是飞行器的质量变化、内部气流的非稳态流动与飞行器姿态运动的相互激励作用。分析结果指出了进一步研究的方向。The instability mechanism of nutation phenomenon which appears in the last stage of launching small satellite using spinning solid rocket motor was analysed.The nutational instability characteristics of flight vehicle were analysed according to practical observational flight data.Several kinds of possible instability mechanisms which result in lateral angle motion were given,and then they were analysed according to actual situation.The result shows that the main reason of the instability motion of flight vehicle is the interaction of the mass variation of flight vehicle and unsteady flow of interior gas and attitude motion of flight vehicle.The analysis result points out further research direction.

关 键 词：旋转固体火箭发动机 飞行器 章动 不稳定性机理 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程]