变质心再入飞行器的质心移动方式研究

变质心控制是一种利用质量块的主动移动来改变飞行器质量特性的控制方式,该控制方式对于克服各种高速飞行器执行机构的气动烧蚀问题有着重要的意义.通过建立变质心再入飞行器的线性化方程,研究了质量块在飞行器内部不同方向上移动与可建立配平攻角之间的关系,并通过仿真计算可知再入飞行器再入的不同阶段质量块沿不同方向移动时的控制效率是有所差别的.研究结论对于提高变质心再入飞行器的控制效率有着重要的意义.

Research on Centroid Moving Mode of Moving Centroid Reentry Vehicles

Moving centroid control for reentry vehicles is used to realize the maneuvering control by changing the center of mass of reentry vehicles and aerodynamic trim torque,so as to adjust the flying attitude and angle of attack.The disadvantages of traditional pneumatic actuator control for reentry vehicles are overcomed including rudder surface ablation when flied at high speeds.In this paper,on the foundation of building up dynamic equations of the moving centroid,the dynamic equationgs are linearizing,and the...