变形翼无人机纵向动力学建模及飞行力学特性分析  

Longitudinal Modeling and Analysis of Flight Dynamics of a Morphing Win UAV

作　　者：邵朋院 张治国 屈高敏 谭健 张西 SHAO Pengyuan;ZHANG Zhiguo;QU Gaomin;TAN Jian;ZHANG Xi(Xi’an Aeronatical Institute,Department of Aircraft,Xi’an 710077,China;Lanzhou Flight Control Co.,Ltd,Lanzhou 730070,China)

机构地区：[1]西安航空学院飞行器学院,陕西西安710077 [2]兰州飞行控制有限责任公司,甘肃兰州730070

出　　处：《郑州航空工业管理学院学报》2024年第4期21-28,共8页Journal of Zhengzhou University of Aeronautics

基　　金：陕西省自然科学基础研究计划(2021JQ-845,2022JZ-37,2023-JC-QN-0031);陕西省教育厅专项科研项目(21JK0701)。

摘　　要：文章建立了变形翼无人机(Morphing Wing UAV, MWUAV)的纵向动力学模型并在此基础上对其飞行力学特性进行了简要分析。首先,针对MWUAV的参数变化特点,建立纵向非线性参数变化(Nonlinear Parameter-Vayring, NPV)模型;其次,分析了参数变化对其静态特性的影响,包括升阻特性、转动惯量特性以及飞行包线的影响;最后,在建立模型和静态特性分析的基础上,在其飞行包线内选择典型分析点,进行了配平和线性化分析,得出了其配平量随参数变化的关系,并计算了其纵向长短周期模态特性。建模和分析结果可以为MWUAV的飞行状态设计以及控制器设计提供设计依据。In this paper,the longitudinal dynamics model of Morphing Wing UAV(MWUAV)is established and the flight dynamical characteristics are briefly analyzed on its basis.Firstly,a longitudinal nonlinear parameter-varying(NPV)model is established for the parameter variation characteristics of MWUAV;the effects of parameter variation on its static characteristics,including the lift-drag characteristics,the inertia characteristics,and the flight envelope,are analyzed;and on the basis of the established model and the analysis of the static characteristics,typical analysis points are selected and leveling and linearization are performed in the flight envelope of the MWUAV.On the basis of the established model and static characteristics analysis,the typical analysis points are selected,the leveling and lin-earization analysis are carried out,the relationship between the leveling amount and the parameter change is ob-tained,and the longitudinal long-and short-period modal characteristics are calculated.The modeling and analysis results can provide a design basis for the flight state design of the MWUAV and the controller design.

关 键 词：变形翼无人机 纵向动力学 飞行力学 飞行包线 动稳定性 

分 类 号：V249[航空宇航科学与技术—飞行器设计] V279