飞机外翼段大尺度剪切式变后掠设计与分析  

Design and analysis of a variable-sweep morphing aircraft with outboard wing section large-scale shearing

作　　者：陈钱[1] 白鹏[1] 尹维龙[2] 冷劲松[2] 李锋[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150080

出　　处：《空气动力学学报》2013年第1期40-46,共7页Acta Aerodynamica Sinica

基　　金：国家自然科学基金重点项目(90816026)

摘　　要：飞机大尺度全局变形过程中存在诸多需要研究的基础问题,为此构建了研究平台并开展了实验研究。基于飞行器机翼"旋转变后掠"与"剪切变后掠"的气动特性计算结果,设计了气动特性相对较优的飞机外翼段大尺度剪切式变后掠方式;研制了基于可控变形结构与连续变形规律的实验模型;进行了风洞实验研究。结果表明:本文研制的剪切式变后掠飞机在蒙皮、结构、驱动、控制等方面满足气动特性研究的需求;其准定常气动特性曲线显示出变后掠的较大气动效益;其非定常气动特性曲线呈现出滞回环,原因可能在于"机翼附加速度效应"和"流场结构迟滞效应"。There are many fundamental problems in the process of morphing of aircraft with large-scale shape change. In order to explore these problems, this paper constructed a research platform and conducted an experimental study. Based on computation of the aerodynamic characteristics of ＂rotating variable-sweep＂ and ＂shearing variable-sweep＂, a variable-sweep style of large-scale shearing which has relatively higher aer- odynamic efficiency was designed; ex-periment model based on controllable morphing structure and continu- ous morphing method was constructed; and the wind tunnel experiment was conducted. The results demon- strate that： the skin, structure, actuation and control of this variable-sweep morphing aircraft with outboard wing section large-scale shearing are suitable for aerodynamic research; the quasi-steady aerodynamic charac- teristics curve show big aerodynamic benefit of variable sweep; the unsteady aerodynamic characteristics curve exhibit hysteresis circle, and the reasons may be wing additional-velocity effect and flow-field structure hysteresis effect.

关 键 词：变形飞机 剪切式变后掠 风洞实验 变形结构 变形控制 非定常气动特性 迟滞效应 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]