中文摘要：

大型飞机的机体尺度与中小规模的风场尺度接近,为进行高逼真度的飞行仿真,需要建立含扰动风参数影响的动力学模型。推导了含三维扰动风参数的六自由度动力学方程,给出了扰动风参数的计算方法。基于B747-100飞机建模数据,结合四点模型,给出了扰动风场中气动模型修正的一般方法。改进Newton-Raphson算法,对动力学模型进行了无风状态下的配平,并结合典型飞行状态进行了模型初步验证。分别基于质点模型和四点模型,给出了B747飞机穿越三维大气紊流场的数值仿真实例。结果表明,应用四点模型的仿真结果更能表现出大型飞机对大气紊流响应的随机特性。建立的含扰动风影响的动力学模型以及改进的配平算法可用于飞行模拟器的飞行实时仿真。

英文摘要：

The body scale of large aircraft approaches medium and small size wind field. A dynamic model with turbulent wind effect should be built for high fidelity flight simulation. The six degrees of freedom （6-DOF） equations of motion with threedimensional （3-D） wind field parameters were inferred. The algorithm for calculating wind parameters was presented. Based on modeling data of Boeing747-100 aircraft and combined with four-point model, a general method was proposed for modifying aerodynamic model with wind effect. By improving Newton-Raphson method, the model was trimmed in static atmosphere and validated primarily according to classical flight state. Based on mass-point model and four-point model respectively, the numerical simulation instances of flight through 3-D turbulent field were presented. The results indicate that the simulation based on the latter model can better show the stochastic characteristics of aircraft response to turbulence. The dynamic model with turbulent wind effect and improved trim algorithm can be used in real-time flight simulation for flight simulator.