
Figure 1. a) The CAD model of suspension; b) 3D-printed prototype of the suspension
Another test carried out on the blade was a single airfoil aerodynamic test in the wind tunnel. The blade was placed horizontally in the tunnel at three different angles of attack – 0°, 5° and 10°. The tip of the blade was observed with a high-speed camera (see figure 2).

Figure 2. Snapshot of blade tip deflection at 5° angle of attack