摘要
在风洞测力、水洞染色线和激光片光实验的基础上 ,对翼身组合体鸭翼边条翼布局大迎角涡系干扰机理进行了分析和探讨 ,揭示了该布局增升的机理。鸭翼涡位于机翼内侧 ,其与边条涡的相互诱导致使边条涡向外翼偏折 ,既改善了外翼的流态 ,又使机翼前缘涡量卷入边条涡 ,增强了边条涡的强度 ,从而延迟其破裂。两方面的共同作用 ,提高了主翼的涡升力 。
On the basis of wind tunnel force measurement, water tunnel flow visualization for the streak and laser sheet,the vortex system interaction mechanism of the canard strake wing configuration with a wing body combination at high incidence was analyzed and lift gain's cause of the configuration was revealed. Induction between the canard vortex, located at the wing inboard, and the strake vortex with each other resulted in deflection of the strake vortex to the wing outboard. The deflection not only improved the wing outboard flow condition but also made the wing leading edge vorticity twist into strake vortex, which increased the strake vortex's intensity and delayed the strake vortex's burst. Both above make the primary wing's vortex lift increase.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2002年第6期560-563,共4页
Acta Aeronautica et Astronautica Sinica
关键词
边条涡
鸭式布局
迎角
涡干扰
流动显示
飞机
canard configuration
strake
high incidence
vortex interaction
flow visualization
