临近空间长航时太阳能飞行器动导数特性及机理  

Characteristics and Mechanisms of Dynamic Derivatives of the Near Space Long Endurance Solar Powered Aircraft

作　　者：叶川[1] 李锋[1] 付义伟[1] 孙凯军[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《宇航学报》2015年第11期1219-1225,共7页Journal of Astronautics

摘　　要：为解决现有计算方法无法用于动导数机理分析的问题,通过理论推导得到了一组只需要较少总体气动参数的动导数计算公式。根据此计算公式进行的机理分析表明,临近空间长航时太阳能飞行器的大展弦比气动布局、高巡航升力系数对横航向动导数有直接影响。推导的动导数计算公式可用作此类飞行器动导数计算和分析的简便工具。In order to solve the problem that the exsiting methods can not be used to investigate mechanisms of dynamic derivatives, dynamic derivatives calculation formulas which need only a few general and aerodynamic parameters are derived. The mechanism analysis based on the dynamic derivatives calculation formulas suggests that, the aerodynamic configuration with a high aspect ratio wing and the large cruising lift coefficient of the near space long endurance solar powered aircraft have a direct influence on lateral-directional dynamic derivatives. Derived calculation formulas can be used as a convenient tool for dynamic derivatives calculation and analysis of this kind of aircrafts.

关 键 词：临近空间 太阳能飞行器 动导数 计算公式 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]