【摘要】 依据高空长航时无尾飞翼式无人机的主要特点来分析飞机本体静稳定性以及高空巡航状态飞行时的动稳定性和操纵特性。用经典飞行动力学理论详细研究了无人机在16000m高空巡航状态的自然稳定性,并利用Matlab simulink对滚转-俯仰-偏航耦合运动的仿真来分析无尾飞翼式布局在纵、横航向上的耦合特性。基于以上的分析,采用主动控制技术设计纵向和横航向的控制律,阐述了无人机纵向定高爬升和横航向方位角控制时的操纵特性;并进行仿真分析,得到满意的结果,验证了采用主动控制技术可明显改善各项飞行品质要求。更多还原

【Abstract】 The static and dynamic stability of the High - Altitude Long - Endurance (HALE) tailless flying wing unmanned aerial vehicles (UAVs) and their control characteristics are described in this paper on the basis of the main characteristics. Based on the primary principle of flight dynamics, the natural stability of the UAV at the altitude of 16000m under cruise state is studied and the coupling of roll - pitch - yaw is simulated by using the Matlab simulink. Based on the analysis, the control laws of longitudinal and lateral direction are designed to analyze the climbing characteristics of longitudinal and azimuth control characteristics of lateral. The control laws are simulated and the obtained results prove that the Active Control Technology ( ACT) can improve the handling qualities of the UAV.更多还原