• 作者： 洪儒珍; 龍瀛天; 祖國君
• 作者服務機構： 美國阿拉巴馬大學翰咨維校區機械與航太工程系
• 中文摘要： 在旋轉容器內，部份充液氦II遭受側面衝擊，重力梯度支配，或重力振盪支配的加速度作用下之晃動力學與軌道力學的偶合做了詳盡探討。研究結果顯示軌道力學之推動主要源自於液體晃動力學。在軌道力學之控制技術的開發，如忽略液體晃動力學的作用，可能導致錯誤的結論。
• 英文摘要： Coupling of sloshing dynamics within a partially filled rotating dewar of superfluid helium II withspacecraft dynamics are investigated in response to the environmental disturbances of a combined gravitygradient and g-jitter accelerations and lateral impulse, which include three cases of forces dominated by(1) a lateral impulse, (2) a gravity gradient, and (3）g-jitter forces. The purpose of this study was toinvestigate how coupling of slosh dynamics driven by three cases of environmental forces with spacecraftdynamics can affect bubble deformations and their associated fluid and spacecraft mass center fluctuations.The numerical computation of slosh dynamics was based on the rotational frame while the spacecraftdynamics were associated with the non-rotational frame. Results show that the major contribution ofspacecraft dynamics are driven by coupling with slosh dynamics. Not considering the effect of sloshdynamics acting on the spacecraft may lead to incorrect results for the development of orbital and attitudecontrol techniques.
• 中文關鍵字： He II; sloshing dynamics; lateral impulse; gravity gradient force; g-jitter force; spacecraft dynamics; microgravity
• 英文關鍵字： --