【摘要】 针对柔性飞翼飞行器动力学建模中存在的气动非线性问题，提出了一种基于改进涡格法的非线性动力学飞翼飞行器建模方法。首先，对飞翼飞行器的几何参数和结构特性进行了介绍和分析，为后续建模工作提供了基础参数。然后，设计了飞行器动力学模型，其中采用改进后的涡格法将气动非线性因素引入空气动力学模型，和结构动力学模型、飞行动力学模型、执行机构和传感器共同组成了全机模型。最后，根据柔性飞翼飞行器的实际参数进行了仿真实验，通过根轨迹图和系统响应结果，验证并分析了气动非线性因素引入对飞行器动力学建模的影响。仿真结果表明，该飞行器模型能够充分反映气动非线性特性，而气动非线性因素的引入也会对模型响应的颤振特性和系统响应产生影响。更多还原

【Abstract】 This paper aiming at the aerodynamic nonlinearity in the dynamics modeling of flexible flying wing vehicle,a nonlinear dynamics modeling method based on improved vortex lattice method is proposed. Firstly,the geometric parameters and structural properties of flying wing aircraft are introduced and analyzed,which provides basic parameters for subsequent modeling work.Then,the aircraft dynamics model is designed,in which the aerodynamic nonlinear factors are introduced into the aerodynamics model by the improved vortex lattice method,and the whole aircraft model is formed together with the structural dynamics model,flight dynamics model,actuator and sensor. Finally,according to the actual parameters of the flexible flying wing vehicle,the simulation experiment is carried out. Through the root trajectory diagram and the system response results,the influence of aerodynamic nonlinear factors on the vehicle dynamics modeling is verified and analyzed. The simulation results show that the aircraft model can fully reflect the aerodynamic nonlinear properties,and the introduction of aerodynamic nonlinear factors will also affect the flitter characteristics of the model response and the system response.更多还原