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The Duotone Wing

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Hansen Design
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Re: The Duotone wing

Postby Hansen Design » Sun Apr 21, 2019 6:59 pm

Pullstrings:
That video was filmed 30 years ago !!
At Windwing in Berkeley, CA, we worked closely with Tom and Jim to develop and optimize the WindWeapon and we became their production supplier. The swept dihedral geometry is a primary design feature that I suggested to Tom to solve some initial unwieldy problems. This geometry seems natural by viewing the versions since built by others (including the inflatables,) but took a few prototypes to get right in the beginning.

The purpose for the geometry is multiple:
1) Maximize the square area since the system is limited by rider stature and their ability to reach and hold the wing overhead in a flying position and rotate it to vertical in a sailing position.
2) Improve upwind sailing VMG by orienting the upper wing half more perpendicular to the higher wind velocity aloft without dragging the lower wingtip in the water.
3) Position the CE such that the rider could handle the forces in balance like a windsurfing sail without fatigue from pitching moment.
4) Stability while airborne to improve control.

Tom was an energetic, enthusiastic innovator with a dedicated passion for flying and a pleasure to work with.

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jumptheshark
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Re: The Duotone wing

Postby jumptheshark » Mon Apr 22, 2019 10:28 pm

PullStrings wrote:
Sat Apr 20, 2019 6:09 pm
Image

Flying Squirrel Onesie
These users thanked the author jumptheshark for the post (total 2):
jakemoore (Tue Apr 23, 2019 4:20 am) • foilholio (Sat May 25, 2019 1:11 am)
Rating: 16.67%

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NYKiter
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Re: The Duotone wing

Postby NYKiter » Mon Apr 22, 2019 11:31 pm

really....


good lord....that looks dumb

:lol: :lol: :lol: :lol:

PullStrings
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Re: The Duotone wing

Postby PullStrings » Mon Apr 22, 2019 11:58 pm

Wow great find Star !!
He makes it look so easy

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cglazier
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Re: The Duotone wing

Postby cglazier » Tue Apr 23, 2019 2:13 am

Great video. Kai Lenny is so talented and always at the forefront of innovation.
64,000 views of that video already..

;-) CG

ronnie
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Re: The Duotone wing

Postby ronnie » Thu Apr 25, 2019 11:53 am

Jfoil wrote:
Wed Apr 17, 2019 9:38 am
ronnie wrote:
Tue Apr 16, 2019 12:20 pm
IMO the Duotone wing looks quite efficient.

It could be interesting to compare the production 5m Duotone wing with a 4.6m Kitewing to see what their advantages are - especially if used to sail upwind to catch another wave. Kitewing seem to have some association with Ezzy Sails, so they could probably make a version of the 4.6m that would be useable on water. The frame is carbon and a few small mods might make it into a water version.
The Kitewing has obvious disadvantages on the water, but it might be a useful standard for comparison for how efficient a particular inflatable wing is?

The kitewing is awesome and is really the original in my opinion, but it’s is heavy and so I don’t think it took off on the water because it wasn’t inflatable
Kitewing 3m Sport - flat cap style.

See-through Kitewing 4.6m Mylar/scrim.
Last edited by ronnie on Thu Apr 25, 2019 6:35 pm, edited 5 times in total.

ronnie
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Re: The Duotone wing

Postby ronnie » Thu Apr 25, 2019 11:56 am

A homemade wing.


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Toby
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Re: The Duotone wing

Postby Toby » Thu Apr 25, 2019 12:04 pm

Windwing is back ?

Jfoil
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Re: The Duotone wing

Postby Jfoil » Thu Apr 25, 2019 10:49 pm

Kiteboarding is still needed


ronnie
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Re: The Duotone wing

Postby ronnie » Mon May 20, 2019 9:55 am



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