Wind Ellipse
2.3 x 1.2 x 0.9 feet
This object consists of two groups of parallel semi-ellipticalplates being perpendicular to each other, which alltogether form an elliptical body. This body can rotate around a vertical and an horizontal axis. If the vertical plates are in front of the wind they turn back around the vertical axis. Thereby the horizontal plates get in front of the wind and they are pushed back around the horizontal axis. Now the vertical plates are in front position again. The circulation starts.
See also: [11.4 MB]
kleine WindEllipse
Bastelbogen