1) This is the blade that I previously called the Tsagi_mod_20%
2) This blade was designed by Sebastian Elfers and is released for non-commercial use only.
3) Note this is a 10MPH wind.
4) At first glance you might think I've mixed up my efficientcy graphs and my power graphs, but I haven't. At this wind speed the power in the wind is 100 watts so the graphs look very similar.