75°／45°双三角翼外翼前缘形状对大迎角分离流动特性影响  

The Effect of Outboard Leading-Edge Shape of 75°/45°Double-Delta Wing on Separated Flow Characteristics at Large Incidence

作　　者：冯亚南[1] 吴成[1] 熊善文[1] 刘日之[1] 邢玉山[1] 

机构地区：[1]北京航空航天大学

出　　处：《空气动力学学报》1994年第3期301-306,共6页Acta Aerodynamica Sinica

摘　　要：本文通过风洞试验和水洞试验研究了７５°／４５°双三角翼的外翼前缘形状对大迎角分离流动的影响。试验表明，在涡破裂沿翼面向前发展的迎角范围内，外翼前缘钝化对涡态的发展、压强分布和气动力有较大影响。The vortex visualization and surface pressure distribution for a 75°/45°double-delta wing were carried out in the water tunnel and in the low speed wind tunnel of BUAA. The inboard wing of models is sharp-edge and the outboard wing has both sharp and round leading-edge. The effect of outboard leading-edge bluntness of double-delta wing on separated flow characteristics at large incidence were studied. Experi-mental results indicate that outboard leading-edge bluntness has effect on vortex patterns development,pressure distribution and aerodynamical force at incidences range for vortex bursting.

关 键 词：分离流动 双三角翼 大迎角 飞机 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]