Application of through surface perforation for aircraft flow parameters control

The paper considers the aerodynamic characteristics of solid and perforated plates of different configurations at the incoming flow velocity $V_{\infty}$ = 25m/s and angles of attack 0° $\leq \alpha \leq$ 90°, describes the effect of perforation on the flow structure near the plate surface, and analyzes the influence of the degree of perforation and internal cavity on the aerodynamic characteristics and flow structures. The aerodynamic coefficients of the considered plates were calculated by numerical simulation in the FlowVision software package, smoke visualization was used to obtain experimental flow structures. Based on the results of the work, conclusions are drawn about the efficiency of using aircraft controls having the form of flat perforated plates.