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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Multibody modelling of an internal gyroscopic micro-mechanism for development of lateral deviation of a projectile
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Multibody modelling of an internal gyroscopic micro-mechanism for development of lateral deviation of a projectile

机译：内部陀螺仪微机构的多体建模，用于产生弹丸的侧向偏差

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摘要

The lateral control of a projectile for targeting and impacting a nonstationary target is of interest in many applications. Through the use of internal moving parts, gyroscopic forces can be generated, thus changing the flight trajectory of the projectile. In this study, three small internal swing masses are introduced to the projectile and their motions are controlled. The masses are attached to the end of massless rods that are located on points of an equilateral triangle centered about the major axis of the projectile. A mathematical model for the internal gyroscopic rotating disks of this multibody mechanism and its trajectory path is presented. For this mechanism, the dynamics equations of motion are developed and solved numerically to simulate the trajectory of the projectile. The concept projectile model is shown to move cyclically about the axis of rotation and to deviate from its axis in a relatively even slope. A parametric study is then focused on actuating each mass in sequence or changing the weight of the masses and their initial positions to examine and evaluate the flight trajectory of the projectile. The results from this study show that the lateral deviation of a projectile can be controlled by altering the initial configuration of the rotating mass mechanism. This application may hold merit for controlling the re-entry flight trajectory of air vehicles.
机译：在许多应用中，用于控制和撞击非平稳目标的弹丸的横向控制受到关注。通过使用内部运动部件，可以产生陀螺力，从而改变了弹丸的飞行轨迹。在这项研究中，将三个小的内部摆动质量引入弹丸中并对其运动进行控制。质量块连接到无质量棒的末端，该质量块位于以弹丸的长轴为中心的等边三角形的点上。提出了该多体机构内部陀螺转盘及其运动轨迹的数学模型。对于这种机制，开发了动力学动力学方程，并对其进行了数值求解，以模拟弹丸的轨迹。示出了概念射弹模型，其绕旋转轴循环运动，并以相对均匀的斜率偏离其轴。然后进行参数研究，重点是依次驱动每个质量或更改质量及其初始位置的重量，以检查和评估弹丸的飞行轨迹。这项研究的结果表明，可以通过改变旋转质量机构的初始配置来控制弹丸的​​横向偏差。该应用可以具有控制飞行器的再入飞行轨迹的优点。

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