提高变质心飞行器可操纵性的方法研究

The Research on Manoeuvrable Warheads with Moving-mass

针对滑块运动容易引起系统抖动,以及惯性主轴偏移引起系统耦合严重等问题,基于达朗伯原理对变质心飞行器结构布局进行了设计。其特点是:以主动控制力、约束反力这两种内力替换滑块受到的惯性力,代入弹体、滑块动力学模型中,并依靠内力、过载等物理量设计系统布局参数。布局设计后特点是两滑块运动通道分别重合于弹体惯性主轴方向,通过与典型布局模型相比较,显示了所提出的布局结构可保证系统具有良好的动态品质。

Layout design method based on D＇Alembert principle is proposed in this paper, trying to solve the system vibration problem caused by moving-mass, as well as system coupling problem caused by principal axis misalignment. Feature is： dynamic models for rigid body and moving-mass by local approach are established, and system layout parameters are designed based on physical variables like internal force and overload. Typical layout for reentry vehicle with three moving-mass was used as research object, layout model with two horizontal moving-mass was established after the design process, and the moving channels of the two horizontal moving-mass were superposed with the horizontal inertia axis of the rigid body, the dynamic quality of the system before and after layout were also compared through theoretical analysis and mathematical simulation.