Silver_surfer wrote:Yes, the trend in kiteracing is for sharper leading edge of the fins, I think that the goal is to achieve more speed and more control, by sharpening the leading edge you get less lift but more control at high speed.
Having 3 fins kiterace boards do not have problems of spinout, so less problems than ws at the variation of the angle of attack and may be the higher density of the water instead of air, give the same advantage, with a sharp leading edge, like the supersonic flight ?.
But if the fin is too sharp it becames dangerous, we have problems yet with the trailing edge that cut like a knife, but usually you just cut yourself, please don't exagerate also with the leading edge, if you hit someone you'll kill him...
I think that IKA should put a limit to the sharpness of the fins and check them before each race.
higher density of the water instead of air,
BWD wrote:from what I have read, I think the Reynolds Numbers for water at 15-30knots are pretty much in the neighborhood of the Reynolds Numbers for air in trans-sonic to low supersonic range, due to the density water:air ~/= 800:1
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