六旋翼无人机的飞行力学建模研究

为开展六旋翼无人机的全机飞行力学建模研究,针对六旋翼无人机的前飞和非定常飞行要求,引入了动量叶素理论和动态人流理论对旋翼气动力进行分析.根据无人机的变转速控制方式,增加了旋翼转速变化对机身运动的影响项,推导了使六旋翼总需用功率最小的拉力分配优化方法,建立了六旋翼无人机的飞行力学模型.气动力计算结果表明,新建立的旋翼气动力计算方法精度高于现有的比例系数法.

Flight dynamics modeling research for a six-rotor unmanned aerial vehicle

A research on the flight dynamics modeling of a six-rotor unmanned aerial vehicle (R6UAV) was carried out in this paper.The momentum-blade element theory and dynamic inflow theory were incorporated into the rotor aerodynamic analyzing model with respect to the demand for transient flight.The influence of rotor angle acceleration on fuselage was added into the flight dynamic model of R6UAV,and an optimum thrust distribution method was conducted which could give a minimum power.The predicted resuits indicate that the new founded analysis method for rotor aerodynamic force is more accurate than former proportional prediction method.