An experimental study on forebody vortex flow control technique using combined perturbation

The control capability of aircraft forebody asymmetric vorticeswith micro-triangle and the effect of blowing on lee side on asymmetricvortices are discussed in this paper. A new kind of active controltechnique, the perturbation-combined active control technique, whichcombines the micro-triangle and micro-blowing perturbation, is proposed onthe basis of the above discussion. The test was conducted in the D4 wind tunnel inBeijing University of Aeronautics and Astronautics. The result shows thatthis perturbation-combined control technique is effective forcontrolling the side-force of aircraft with a high attack angle.