Flyboy II wrote:Single attach point (pump leash)
Other then spreading the point load of a single attachment point to prevent tearing (the loads aren't that high though) or eliminate again a single point restraint which might encourage the leading edge to bend at that point, I don't think the system would behave any differently aerodynamically. The aerodynamics of the shape and the drag of the tips is what rotates the kite upside down, not the number of attach points.
Now I am only familiar with my rig, and I hadn't thought of these elastic bridles or adding the ability to tune the length of the line to adjust the angle of attack. Excuse me, I must retire to my lab to experiment now...
Scott
I read your longer explanation and this one. It seems to
me that one tuning issue is that the kite may fly up
upside down if the 5th line is too short (or flying lines
too long, depending on POV). This makes me think
that putting the 5th-line attachment points some distance
below the leading edge may eliminate that problem.
So, if you put the attachment point on the bottom of
the front tube, rather than at the front, wouldn't the
5th-line itself give the kite a slight downward angle of
attack once it was on the water? I said "bottom" only
as an example. It would take some experimentation
to figure out exactly the right spot. Maybe even
around the back of the front tube would be best.
By the way, thanks very much for your complete description.
Stergios