Abstract: There is a large side force on the slender body at high angle of attack (AOA). Vortex generators (VG, a micro delta wing) are fixed on the tip of the slender body with 10° semi-apex angle as actuators in this paper. Side forces can change approximately proportional to roll setting angle of VG along the model axis at high AOA. Moreover, the effects of the parameters of VG, such as half-wingspan length, sweepback of lead edge and AOA have been researched. It is found that the vortex generators with 6mm half-wingspan and 45° sweepback show good performance on the presented slender body at a series of AOAs. This device is very simple that can be used in engineering in the future.