非对称伸缩翼飞行器动力学建模及特性分析  

Dynamics Modeling and characteristic analysis for vehicle with asymmetric span morphing wing

作　　者：郭建国[1] 陈惠娟[1] 周军[1] 蒋瑞民[1] 王国庆 

机构地区：[1]西北工业大学精确制导与控制研究所,陕西西安710072 [2]北京运载火箭技术研究院研发中心,北京100076

出　　处：《系统工程与电子技术》2016年第8期1951-1957,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(61473226)资助课题

摘　　要：以非对称伸缩翼飞行器为对象,构建了非对称变翼下的飞行器动力学模型,分析了非对称变翼对动力学的影响特性。首先,运用牛顿-欧拉法建立了飞行器多刚体动力学模型,突出了非对称伸缩变形所产生的模型差异;其次,以流体力学计算软件计算获得的气动数据为依据,探讨了非对称伸缩变形对飞行器质心偏移、转动惯量、气动特性、滚转力矩和纵向静稳定性的动力学特性的影响规律。最后,将翼展非对称动态变化作为系统输入,以非对称伸缩翼所占的质量比和伸缩速率为特征量,分析了翼展非对称变化下的飞行器动态特性。结果表明,翼展非对称伸缩动态变化,使飞行器具有快速滚转的能力,可作为一种主动控制方式。Taking the asymmetric span morphing wing as the object,a dynamic model of vehicle with asymmetric span morphing wing is constructed,and the influence of the asymmetric morphing wing on the dynamics is analyzed.Firstly,the multi-rigid-body model of vehicle is established in order to highlight the differences arising from the asymmetric span morphing by utilizing the Newton Euler method.Secondly,on the basis of computational fluid dynamics（CFD）calculation of aerodynamic data,the properties of the dynamics of deformation are discussed including offset of center of gravity,moment of inertia,aerodynamic characteristics,rolling moment and the longitudinal static stability of the vehicle.Finally,with asymmetric dynamic change of wingspan as the system input,dynamic characteristics of the vehicle are analyzed by introducing the morphing velocity and mass ratio of the morphing wing to the body as two key parameters.The results show that asymmetric span dynamic change could make the vehicle rapidly roll,as a kind of active control.

关 键 词：变体飞行器 非对称 伸缩变形 动力学建模 动态特性 

分 类 号：TJ761[兵器科学与技术—武器系统与运用工程]