Report KD 693 can be copied for free from my website:
www.kdwindturbines.nl at the menu KD-reports. The tittle of this report is: "Calculations excuted for the 4-bladed rotor of the VIRYA-3.5 windmill (lambda design = 4, stainless steel blades) meant to drive a centrifugal pump through a Polycord transmission with an accelerating gear ratio 2.5 : 1 and a vertical shaft in the tower". KD 693 replaces KD 652 and KD 653. The VIRYA-3.5 is meant for drainage or for low head irrigation. To give an impression of this windmill, I have added the sketch of it as given in appendix 1 of KD 693, as attachment.
