空气动力学学报2011，Vol.29Issue(5)：645-650,6.
滑动蒙皮变后掠无人机非定常气动特性研究
Investigation on the unsteady aerodynamic characteristics of sliding-skin variable-sweep morphing unmanned aerial vehicle
摘要
Abstract
In order to explore the unsteady aerodynamic characteristics and its mechanism of aircraft during shape morphing, wind tunnel experiments of a sliding-skin variable-sweep morphing unmanned aerial vehicle (UAV) were conducted, and unsteady aerodynamic characteristics were studied. The results demonstrate that; the unsteady aerodynamic characteristics curves of the UAV during shape morphing generate hysteresis loops around corresponding quasi-steady curves; the faster the UAV morphs, the greater the hysteresis effect is; when the UAV varies sweep with a speed of 7.5°/s, the value of the unsteady aerodynamic characteristics will deviate corresponding quasi-steady value by exceeding 5% ; the main reasons of the formation of the above unsteady aerodynamic characteristics may be flow-field structure hysteresis and wing additional-velocity.关键词
变形飞机/非定常气动特性/流场结构迟滞/机翼附加速度/风洞实验/变后掠/滑动蒙皮Key words
morphing aircraft/unsteady aerodynamic characteristics/flow field structure hysteresis/wing additional- velocity/wind tunnel experiment/variable sweep/sliding skin分类
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陈钱,白鹏,陈农,李锋..滑动蒙皮变后掠无人机非定常气动特性研究[J].空气动力学学报,2011,29(5):645-650,6.基金项目
国家自然科学基金重点项目(90816026) （90816026）
