Report KD 662 has been added to the menu KD-reports. The tittle of this report is: “The VIRYA-0.45, a small wind turbine for practical tests by students in the class room”. The test rig and the rotor were already developed in 1998 but were never published and the Dutch report KD 27 in which the test rig is described was not made public as it isn’t digital. As there is interest in Israel for such a test rig, the relevant subjects out of KD 27 were translated into English in this new report KD 662. KD 662 contains photos of detailed drawings of the test rig, the rotor and tools to twist the blade spokes. The wind turbine is that simple that the rotor can be made by high school students. Several tests are described to give them an impression about wind energy.