All in all, there are three central contributing factors to Aerovane's success.
Rigid Airfoil : one of the hardest vanes on the market, Aerovane is also designed as a slim pyramid to ensure rigidity. With that stiff design, wow and flutter (together, also known as harmonics or oscillation frequency) are minimized.
Round Leading Edge : Aerovane is modeled after an owl's wing. With its rounded edges, Aerovane allows air to flow over with minimum air molecule to air molecule disturbance. This also minimizes the formation of a delta vortex, which robs speed and creates sound.
Micro-textured Surface : There are 3 zones of micro-texturing on each side of the Aerovane II and 4 zones on the Aerovane III. Designed to minimize back end turbulence and vacuum back pressure, this technique minimizes surface to air drag (i.e. friction).
Very quiet and tough vane that fly true.
These are excellent!