Report KD 738 about the VIRYA-6 is replaced by report KD 763 about the VIRYA-7. The title of KD 763 is: “Calculations executed for the 3-bladed rotor of the VIRYA-7 windmill (lambda design = 7) for connection to the axial flux generator of Hefei Top Grand PMG-I-620-10kW-250R for grid connection heating or water pumping using the hinged side vane safety system”.