Aerodynamic Analysis of Double Wedge Airfoil 16.5% @ 50% in Different Angle of Attack at Supersonic Flow

Double wedge airfoil is one of the most efficient airfoils at supersonic speeds.these airfoils have sharpedges and enhance the aerodynamic characteristics by oblique shock waves.In this study doublewedge airfoil 16.5% @ 50% has been studied.Numerical solution method was used for the study andaerodynamic characteristics including lift coefficient and drag coefficient and pressure coefficientwas calculated from -15 to +15 angle of attack in Mach number equal to2.It was observed that thelift coefficient increases for the positive attack angle by increasing the angle of attack until AOA=5and after that reduced and for the negative attack angle the situation is the opposite positive attackangle conditions. It was observed that as the angle of attack for positive and negative attack angleincreases, the drag coefficient always increases. It was observed that that as the angle of attack forpositive and negative attack angle increases, the value of the pressure coefficient is always reduced,however this decrease is more severe under negative attack angle conditions. The results showed forthe angle of attack from 0 to +5 and 0 to -5, the absolute mathematical value of aerodynamic efficiencyincreases with a large slope, but then decreases from 5 to 10 and from -5 to -10, the aerodynamicefficiency decreases with a large slope and then approaches 0 with a gentle slope. Finally, the resultsof the numerical solution method were compared with the experiment, which had the highest error ofabout 7%, which indicates the reliability of the numerical solution results