分布式非线性气动力模型弹性飞机动力学研究  

Study on flexible-body aircraft flight dynamics based on nonlinear distributed aerodynamic force

作　　者：张戈[1] 王正平[1] 任钟霖[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《飞行力学》2012年第2期110-112,116,共4页Flight Dynamics

基　　金：国防基础科研计划资助(A2720060290)

摘　　要：建立了线性与非线性两种分布式气动力模型,在弹性飞机模型上添加所建立的气动力模型,验证了整个系统的有效性。对所建立的模型进行着陆及突风扰动动力学仿真,对比线性及非线性气动力模型的飞机动力学响应的差异,结果表明非线性气动力模型能够更合理地计算飞机大迎角状态下的气动载荷及动力学响应。Linear and nonlinear distributed aerodynamic force models are established and applied on flexible-body aircraft models,and the entire system is proved to be reasonable and available.Landing simulation and gust perturbation simulation are run based on the established model.The difference between the dynamic responses of linear and nonlinear aerodynamic force models are compared.The results show that the nonlinear aerodynamic force model is more reasonable for the calculation of aerodynamic force and dynamic response of aircraft at high angle of attack.

关 键 词：柔性飞机 非线性 分布式气动力 动力学 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程]