Using the figures below, explain the trends for each angle of attack (that are shown) as the flap deflection angle changes in Figure 1. Use Figure 2 to help explain these trends. The following figures represent data for a NACA 0012 airfoil. Note that an error was made when performing the experiment.

Figure 1

Figure 2

 

0.3 0.25 0.2 Alpha = -4 J 0.15 Alpha = 0 - Alpha = 4 - Alpha = 8 0.1 0.05 5 10 15 20 25