直升机飞行动力学建模及可视化研究

研究了直升机飞行动力学建模及可视化仿真的相关技术。建模时综合考虑了直升机的主要气动力部件的建模以及气动干扰等问题。主旋翼是直升机建模的关键，详细讨论了与其相关的翼型气动力模型、诱导速度模型和挥舞运动模型的建模方法。同时利用虚拟现实技术构建了直升机三维实体模型。基于Simulink和虚拟现实工具箱，给出了将飞行动力学数值模型同虚拟场景结合起来的方法，实现了计算、仿真、显示一体化。最后采用算例直升机数据，进行了定直飞行的配平计算和操纵响应分析，结果证明了模型的合理性和有效性。

Study on Modeling and Visualization of Helicopter Flight Dynamics

The paper investigates the technologies associated with modeling and visualization of helicopter flight dynamics.In the process of modeling,the construction of the primary aerodynamic components of helicopter and the aerodynamic interference effects are considered comprehensively.Main rotor is the key part of helicopter modeling,the associated modeling methods of aerofoil aerodynamic loads,rotor inflow dynamics and blade flap motion are discussed in detail.A 3D helicopter model is established using virtual reality technology.Based on Simulink and Virtual Reality Toolbox,a method for the integration of the virtual world with flight dynamics mathematical model is offered.As a result,the integration of calculation,simulation and visualization is realized.Finally the trim calculation and response analysis are carried out with the example helicopter's data.The results validate the rationality and validity of the model.