For kiwee one flight angle is depending on wind speed. Flight angle at 10m/s windspeed is greater Than 60deg. At that speed, our theoretical extracted power is around 240 watts (by memory). Our measured extracted power is around 210 watts. Wind turbine Drag is about 70 newton.
Thing is, the farthest you are from Betz, the less power you produce and also the less drag. Right now we are really cloth from Betz. Maybe rod is not that cloth. Thus he has less drag… Rod ?
Another difference, kiwee propeller is cloth to the kite, daisy is far from the kite, cloth to the anchor.
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