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Zig-Zag LE's Reason please?

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RAL INN
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Zig-Zag LE's Reason please?

Postby RAL INN » Tue Jul 01, 2008 6:33 am

assuming an efficient aerofoil is a good aerofoil.
and that throughout Aero history a straight LE has produced the best efficiency.

What is the reason behind this attraction with every form and combination of adding a Zig Zag to LE's.

Surely it's not just Marketing.

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Re: Zig-Zag LE's Reason please?

Postby Neill » Tue Jul 01, 2008 7:16 am

moves the centre of effort backwards on the kite, doesn't make it fly more efficiently. apparently good because it doesn't pitch forwards as you sheet it off. in practice however, doesn't make that much of a difference to real-world impressions of the kite.

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Re: Zig-Zag LE's Reason please?

Postby tungsten222 » Tue Jul 01, 2008 7:36 am

bis repetita non placent.
Last edited by tungsten222 on Wed Feb 03, 2010 4:31 pm, edited 1 time in total.

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Re: Zig-Zag LE's Reason please?

Postby surfingwithkites » Tue Jul 01, 2008 7:44 am

as Neil says, it does seem to be related to stabilizing the kite during the high sheeting action that has become the "norm" for kiting. It also seems to make them sit back a bit in the window. I also agree that they don't fly any better or worse than the more conventional shaped hybrids. Seems marketing must be a part of it too. Overall it's a functional idea that works but not better or revolutionary (so far). Just another option.

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Re: Zig-Zag LE's Reason please?

Postby Windrider » Tue Jul 01, 2008 7:48 am

You left out this guy....
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RAL INN
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Re: Zig-Zag LE's Reason please?

Postby RAL INN » Tue Jul 01, 2008 10:17 am

Ok I can sort of see the logic in moving the centre area of the LE back and thus the CofG, to avoid pitching forward. but wouldn't a more forward positioned centre of effort (forward draft) do the same thing.

Many of the advancements in kite performance have come from reducing drag and I believe more top end performance and control can be got by aiming for a kite with less drag that can still be given some extra AoA. Currently the is a point where in the top end the kite has to be flown pretty much at maximum depower and most of the pull is actually drag.

I find it slightly illogical to add Drag in the form of a longer LE as is achieved with Zig Zags.

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Re: Zig-Zag LE's Reason please?

Postby munteruk » Tue Jul 01, 2008 11:44 am

It's just marketing, something to differentiate a Naish kite from every other kite on the beach.

In practice I think the negative effects of a longer LE and a discontinuous airfoil and the positive effects from a relocated center of effort are all completely surpassed by other design aspects (that are presumably harder to identify and harder to market).

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Re: Zig-Zag LE's Reason please?

Postby tungsten222 » Tue Jul 01, 2008 12:26 pm

bis repetita non placent.
Last edited by tungsten222 on Wed Feb 03, 2010 4:30 pm, edited 1 time in total.

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Re: Zig-Zag LE's Reason please?

Postby windmaker » Tue Jul 01, 2008 4:34 pm

In practice I think the negative effects of a longer LE and a discontinuous airfoil and the positive effects from a relocated center of effort are all completely surpassed by other design aspects (that are presumably harder to identify and harder to market).
It's just marketing, something to differentiate a Naish kite from every other kite on the beach.

In practice I think the negative effects of a longer LE and a discontinuous airfoil and the positive effects from a relocated center of effort are all completely surpassed by other design aspects (that are presumably harder to identify and harder to market).
Especially considering the fact that other manufacturers ( F-One/North/RRD) are going in a complete different direction with the Delta shape.

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Re: Zig-Zag LE's Reason please?

Postby Peter_Frank » Tue Jul 01, 2008 5:34 pm

munteruk wrote:It's just marketing, something to differentiate a Naish kite from every other kite on the beach.

In practice I think the negative effects of a longer LE and a discontinuous airfoil and the positive effects from a relocated center of effort are all completely surpassed by other design aspects (that are presumably harder to identify and harder to market).
Exactly my words Munteruk - couldnt agree more :thumb:

Kindly, Peter Frank


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