低速大迎角双襟翼大后掠三角翼的俯仰与滚转涡控流态实时显示  

Real time visualization of the vortex controlled flow patternsin low speed around a highly swept delta wing with bi flap systemin pitching and rolling at large angle of attack

作　　者：倪刚[1] 刘杰克[1] 忻鼎定[2] 余光志[3] 

机构地区：[1]北京空气动力研究所,北京100074 [2]北京航空航天大学流体所,北京100083 [3]北京大学力学系,北京100871

出　　处：《流体力学实验与测量》1999年第3期52-58,共7页Experiments and Measurements in Fluid Mechanics

基　　金：国家自然科学基金;航空基础科学基金

摘　　要：在低速实验中，应用激光片光源和ＣＣＤ 摄像系统，对一装有“前端襟翼”和“前缘襟翼”的双襟翼７４°后掠三角翼进行实时记录与流态显示的试验技术和图像的三维重建。在迎角０°～５０°范围内，对双襟翼的偏角作不同匹配，研究机翼在定常和非定常的俯仰与滚转运动中出现的旋涡流态，以了解分离涡系发展、破裂和相互作用的演变，物理机理和双襟翼的控涡效果。A recording system of laser sheet visualization comprising laser source and CCD camera was employed for the visualization and real time recording to investigate the flow past a highly swept delta wing equipped with apex flap and leading edge flaps.Techniques of testing and the three dimensional reconstruction of vortical structure are discussed in this paper. By matching the deflection of apex flap and leading edge flaps,a study of steady and unsteady flow patterns proceeded within the range of angle of attack from 0° to 50°.Herewith,the flow patterns are also analysed according to the pictures of image visualized.

关 键 词：激光 流态显示 双襟 三角翼 俯仰 滚转 大迎角 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]