I built a simple wing profile from plywood and paper and made a short video. In contrast to the sail profile, the wing is less sensitive against stalling. Its possible angle of approach is bigger. Good for pilots, bad for sailors. I will have a closer look on the physical effects, in order to understand what happens in detail. Please leave a comment if you know about the topic.
Hier ein großer Bruder des Deskbreeze, mit dem gerade Otto Lilienthals Gleiter getestet wurde: http://www.spiegel.de/wissenschaft/technik/lilienthal-flugapparat-besteht-test-im-windkanal-a-1092667.html