Hang gliders are in fact thin LE single skins aren't they? Correct me if I'm wrong.evan wrote: ↑Wed Dec 19, 2018 3:30 pmWhy the focus on a Thin LE and single skin for high performance?
We need to aim for a clean as possible proper profile shape, just like aeroplane and hydrofoil wings. That's the reason hanggliders can go much faster and are more effecient compared to paragliders. Single skin won't come even close, no matter how thin you make the LE.
Problem with the current twinskin racekites is the bulging of the cells, all the wrinkles and bridle.
But that is strength for pull not stiffness. Then it is irrelevant where material under stress is and strength for sure increases linearly to cross section. But when there is bending stress it is of course beneficial to get material under stress further from the bending axis, then it resists bending moment more efficiently.edt wrote: So when you double the size of the diameter of a rope, let's choose some sampson asmsteel ropes for example, the 1/8th inch rope (3mm) is 1,100 pounds, while the 1/4 inch rope is 3,900 pounds. double the diameter means 4 times the strength not 8 times.
Good questions.evan wrote: ↑Wed Dec 19, 2018 3:30 pmWhy the focus on a Thin LE and single skin for high performance?
We need to aim for a clean as possible proper profile shape, just like aeroplane and hydrofoil wings. That's the reason hanggliders can go much faster and are more effecient compared to paragliders. Single skin won't come even close, no matter how thin you make the LE.
Problem with the current twinskin racekites is the bulging of the cells, all the wrinkles and bridle.
There are recreational singe skin hangliders indeed, but the high-performance ones have a full smooth double sided wing profile.
I'm cooperating with 2 brands. Others showed interest but probably work on their own. I assume that a few more brands will work secretly on it.
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