以外加辅助件推迟三角翼上涡破裂的初步水洞实验

The Water Tunnel Test of Delaying Vortex Breakdown over a Delta Wing Using Supplements

对尖锐前缘、后掠角为60°的大迎角平板三角翼模型进行了水洞实验。附加小辅助件,使机翼前缘脱体涡推迟破裂。流动显示表明,在翼面上的适当位置安放圆弧形或三角形导流体,或在翼面上方另加一辅助小三角翼,能使涡破裂推迟的效果得到显著提高。此结果可供推迟涡破裂来改善飞机气动布局的研究工作参学。

The test of a flat delta wing with a sharp leading edge and back-swept angle of 60° vas performed in the water tunnel. The leading edge vortex breakdown can be delayed using supplements to change the flow field over upper surface of the wing.The flow visualization shows: the effects of delay of vortex breakcown can be enhanced if an arc or a triangle guiding object is put on appropriate position of upper surface and so is a small supplemental delta wing put over the wing surface.This preliminary result could be provided to research of the problem about the general configuration design of aircraft using the delaying of vortex breakdown.