the thing is that the wind will hit the face of the blade and not the sides…so how does it manage to get the lift??? in short how does air flow on this blde??
I’m not an aeronautical engineer, but my understanding is that the air flow creates ‘lift’ due to the airfoil shape and angle. Air had less distance to travel underneath the airfoil than above, creating pressure (lift).
The windmill blade functions the same (like a propeller - boat, airplane). The angle of the blades allow the blades to be pushed in a circular motion by the strongest prevailing wind direction.
Looks like your first image is from wikipedia: