Kinetics: Studying Spacecraft Motion

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课程主页: https://www.coursera.org/archive/spacecraft-dynamics-kinetics

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University of Colorado Boulder

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The dynamical equations of motion are developed using classical Eulerian and Newtonian mechanics. Emphasis is placed on rigid body angular momentum and kinetic energy expression that are shown in a coordinate frame agnostic manner. The development begins with deformable shapes (continuous systems) which are then frozen into rigid objects, and the associated equations are thus simplified.

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As they tumble through space, objects like spacecraft move in dynamical ways. Understanding and predicting the equations that represent that motion is critical to the safety and efficacy of spacecraft mission development. Kinetics: Modeling the Motions of Spacecraft trains your skills in topics like rigid body angular momentum and kinetic energy expression shown in a coordinate frame agnostic manner, single and dual rigid body systems tumbling without the forces of external torque, how differential gravity across a rigid body is approximated to the first order to study disturbances in both the attitude and orbital motion, and how these systems change when general momentum exchange devices are introduced. After this course, you will be able to... *Derive from basic angular momentum formulation the rotational equations of motion and predict and determine torque-free motion equilibria and associated stabilities * Develop equations of motion for a rigid body with multiple spinning components and derive and apply the gravity gradient torque * Apply the static stability conditions of a dual-spinner configuration and predict changes as momentum exchange devices are introduced * Derive equations of motion for systems in which various momentum exchange devices are present Please note: this is an advanced course, best suited for working engineers or students with college-level knowledge in mathematics and physics.

动力学:研究航天器的运动:当航天器在空间中翻滚时,诸如航天器之类的物体会以动态方式运动。了解和预测代表运动的方程对航天器任务发展的安全性和有效性至关重要。动力学:模拟航天器的运动将训练您的技能,例如以坐标框架不可知的方式显示刚体角动量和动能表达,单和双刚体系统在没有外部扭矩力的情况下翻滚,整个刚体上的重力差如何一阶近似于研究姿态和轨道运动中的扰动以及引入通用动量交换装置时这些系统如何变化的一阶近似。 完成本课程后,您将能够... *根据基本角动量公式得出运动的旋转方程,并预测和确定无转矩运动平衡及相关的稳定性 *为具有多个旋转组件的刚体建立运动方程,并推导并应用重力梯度转矩 *应用双旋转器配置的静态稳定性条件,并预测引入动量交换设备后的变化 *对于存在各种动量交换装置的系统的推导运动方程 请注意:这是一门高级课程,最适合于工作的工程师或具有大学水平的数学和物理知识的学生。

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