May i point at the fact that both the "LEI" and "FOIL" are airfoils ? both have a certain profile[airfoil] that gives a great deal of the aerodynamic properties to the kite, and the aerodynamic laws don't change. This means that it's also treu for LEI's that more lift=more dragOn 2002-09-06 13:15, Royce wrote:
Again, fair enough comments. I have done my fair share of parragliding and the reason that there are no lei's is because you don't have to relaunch your wing. Once you hit the water Bummer Your flight is over. The reason that there won't be any major developments in Foil kites...more lift = more drag...less lift = more speed but less flight time. That is the formular that everyone is working with. On a foil you either make the shape of the wing more efficient...maybee small changes or you reduce the drag. Only way to do that is by making a thinner aerofoil. LEI's will have more major development. Look for a kite that adjusts the angle of attack radically in the air. Pull the bar instead of increasing it 3 or 4 degrees it'll be 15..right to the edge of a stall. Change is a commin. As for RnD on foil kites...there are no more calculations to be done. Go get a parraglider formula program and voila theres you kite.
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