The report KD 599: “Measurements of Savonius rotors available on the Internet” has been added to the menu KD-reports. Originally this was a KD technical note written on 30-12-2009 but the digital original was lost because of a computer crash. The content has been typed anew and slightly modified and is now given as the free public report KD 599.
The older report KD 417: “The rotating blade, vertical axis wind turbine” has been added to the list of free KD-reports. This report was originally written in April 2009 but has slightly been modified in November 2015. I think that this type of windmill can better not be used for electricity generation but if a large starting torque is required like, for water pumping, it might be an option.
As I am retired for some years now, I no longer need income from selling my KD-reports. So I have decided that from now on all my public KD-reports can be copied for free by anybody. This concerns ten more reports with former prices in between € 20 and € 40. My most important report is certainly KD 35: Rotor design and matching for horizontal axis wind turbines. Report KD 196 gives questions and answers about each chapter of KD 35 in English and in Dutch. A list of all 46 free public KD-reports is given as the first item of the menu KD-reports. All reports have a rather long title which gives a good impression of the content.
On 9-11-2015 the new report KD 598 has been added at the menu KD-reports. The title of this report is: Ideas about the 3-bladed VIRYA-0.65 water turbine with 20 degrees inclined shaft coupled to the generator of the VIRYA-2.68 windmill for 12 V battery charging.