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Enter the world of Duotone

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Toby
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Enter the world of Duotone

Postby Toby » Sat Nov 10, 2018 11:20 am

Enter the world of Duotone

https://www.youtube.com/watch?v=SNIyXFemI4U

phpBB [video]

Leon van Bergen
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Re: Enter the world of Duotone

Postby Leon van Bergen » Sat Nov 10, 2018 2:42 pm

Great video and great brand, wish i could still call them North..

SolarSet
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Re: Enter the world of Duotone

Postby SolarSet » Sat Nov 10, 2018 9:13 pm

Leon van Bergen wrote:
Sat Nov 10, 2018 2:42 pm
Great video and great brand, wish i could still call them North..
You have my permission to call them still North but for limited time only. Please contact me next month in order to cancel or extend approval. :thumb:

pj sofine
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Re: Enter the world of Duotone

Postby pj sofine » Sun Nov 11, 2018 2:39 am

Thanks, but I'll just stay in my little world!

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GregK
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Re: Enter the world of Duotone

Postby GregK » Sun Nov 11, 2018 3:08 am

This video made my day, 1 min:28 sec into this video, they show an instrumented kite flying / test rig being towed behind a small van.

Finally ! The ability to test kites empirically instead of by subjective / comparative test riding.

Want to know more about this test rig, particularly if it only can do quasi-static testing ( i.e. kite parked at the edge of the wind window, AoA varied ) or whether it can actively control the kite and gather data during kite maneuvers such as looping.

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alexeyga
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Re: Enter the world of Duotone

Postby alexeyga » Sun Nov 11, 2018 3:44 am

Can't help but wonder if they still teach in marketing courses the concept of how unattractive being a needy bitch who's trying too hard is.

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GregK
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Re: Enter the world of Duotone

Postby GregK » Sun Nov 11, 2018 3:53 am

Back in 1987, Gaastra, Bruce Peterson, Dave Russell, Jeff Magnan,Chuck Stahl and others developed and tested new windsurfing sails with the ADTR test rig, which apparently gave the first indications of the benefit of a loose leach sail and helped Pascal Maka win back the sailing speed record from Crossbow.

Hopefully North's kite new test rig will also make similar contributions to new kite developments !

Image

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purdyd
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Re: Enter the world of Duotone

Postby purdyd » Sun Nov 11, 2018 4:49 am

GregK wrote:
Sun Nov 11, 2018 3:08 am
This video made my day, 1 min:28 sec into this video, they show an instrumented kite flying / test rig being towed behind a small van.

Want to know more about this test rig, particularly if it only can do quasi-static testing ( i.e. kite parked at the edge of the wind window, AoA varied ) or whether it can actively control the kite and gather data during kite maneuvers such as looping.

checkout 1:31 in the video

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GregK
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Re: Enter the world of Duotone

Postby GregK » Sun Nov 11, 2018 5:59 am

purdyd wrote:
Sun Nov 11, 2018 4:49 am
checkout 1:31 in the video
Saw that but with a human at the controls the steering and sheeting inputs won't be as repeatable as having a machine at the controls.

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purdyd
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Re: Enter the world of Duotone

Postby purdyd » Sun Nov 11, 2018 6:24 am

GregK wrote:
Sun Nov 11, 2018 5:59 am
purdyd wrote:
Sun Nov 11, 2018 4:49 am
checkout 1:31 in the video
Saw that but with a human at the controls the steering and sheeting inputs won't be as repeatable as having a machine at the controls.
it doesn't matter, it appears they are measuring the line movement of the rear lines and can view the video of the kite, presumably that chicken loop is attatched to a measuring device

whether is is a human or a robot moving the lines, you can still figure out how the kite is reacting to steering lines sheeting and relative length changes, and it is probabaly a lot more flexible

i wouldn't under estimate humans ability to repeat things, especially if they have some feedback and some practice

i'm guessing on that trailer they can change the angle of attack of the kite and measure force versuse wind speed as well as where the kite sits.


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