Rotor blade airfoils performance decrease in HAWT operating in harsch climate sites

(in lingua inglese)
Recently many wind farms have been realised, particularly, in mountainous or in off-shore sites also at high latitudes, sites characterised by the presence of in harsch climate or aggressive environment conditions. In these conditions HAWT's rotor blades may experiment erosion, corrosion, exfoliation and icing caused by the operative conditions. These kinds of surfacial damage are located particularly at the leading edge. The damage may be cuased by raindrops, hailstones that impinge blade surface.