Kitesurfing Aerodynamic Theory

[@rubenvaneupen7327]

Enjoyed your vid

[@theo8326]

excellent excellent video. Im shocked that what I learned about lift in college was completely wrong. It's angle of attack and Bernoulli was absolutely wrong. . Really brilliant video. You've broadened my understanding!!

[@TantrumX]

Why thank you!

[@wernerxldata]

I knew a lot of this but really well explained,made me understand it even better. Especially the part where the wind window shifts with increasing speed is useful to anyone. And it makes you more resistant to marketing B$ 😂

[@petiot11]

I am still with you! ;) You clearly have an engineering/scientific background. This is the absolute best explanation I came across explaining upwind ability! keep bringing these awesome lectures! ;)

[@philippstaudinger1804]

What a great video. Thanks a lot for sharing that kind of information! Since you are advanced in aerodynamics, I have one question ;) I just bought three new 2021 Switchblade kites in different sizes (7,9,12). When I "parked" my 12m switchblade at the edge of the wind window (kite on the water), it always had the tendency to "fall" on the fronttube. My kite instructor and me were wondering, because the wind was strong enough and normally the kite should stay in the "parking position" on the water without the need to do anything. Do you have an idea what could be wrong? The bar and the lines are also brand new... Thanks a lot for your answer and have a great day!

[@samguest5760]

That could be a couple of things, the most obvious would be if the wind was gusty. This can cause the kite to drop back in the window and then shoot forward, where momentum often carries it out of the window (it comes too far forward behind you) this then causes the kite to stall which in itself can cause the kite to "Hindenburg" like you describe, this is often made worse as while the kite flies forward its angle of attack changes and allows the wind to hit to top of the canopy forcing it down even faster. If you were in the water without your feet on the ground this would be made even worse as you are now actually drifting under the kite anyway. If you accompany this with large and fast movements on the bar, ie sheet in and out a lot to try to compensate this further changes the AoA making it even more prone to stalling. The solution, very gentle movements on the bar and try to steer the kite to the right or left before it reaches the zenith to prevent it from over shooting the window.