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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Fri Mar 09, 2012 2:56 am 
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Location: PBKiteboarding.com Sales-Repair-Lessons Ozone, Aboards, Flysurfer, OR, Canada USA Worlwide
You got it.. the wind window moves and shifts all over the place...
I'm doing some pendulum Jumps here... as it shifts...



Now on the SP Purple LTD 12m Sweet!

Paul
www.PBKiteboarding.com

joedy wrote:
Thanks for the links, fellas.

Once I understood the wind window and how it changes while moving with the kite (the apparent wind against the kite), it makes sense now.

-joedy


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Fri Mar 09, 2012 6:07 pm 
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joedy wrote:
Once I understood the wind window and how it changes while moving with the kite (the apparent wind against the kite), it makes sense now.


If you want to visualize wind window I hope my tool helps you

http://www.jori.ws/kite_vectors/

You should see something like attached image
- white arrow is apparent wind
- green arrow is board direction
- true wind is always bottom to top
Attachment:
kitevectors_example_56kn_speedrecord.jpg
kitevectors_example_56kn_speedrecord.jpg [ 109.42 KIB | Viewed 993 times ]


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Fri Mar 09, 2012 9:51 pm 
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Location: Thailand
joriws wrote:
joedy wrote:
Once I understood the wind window and how it changes while moving with the kite (the apparent wind against the kite), it makes sense now.


If you want to visualize wind window I hope my tool helps you

http://www.jori.ws/kite_vectors/

You should see something like attached image
- white arrow is apparent wind
- green arrow is board direction
- true wind is always bottom to top
Attachment:
kitevectors_example_56kn_speedrecord.jpg

Great job jori! :thumb: :thumb: :thumb:
But really, you should back-up more often ;-)


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sat Mar 10, 2012 2:39 pm 
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Joriws:

Thanks for the link, Joriws. I enjoyed using your program. Also, check Foilzone in the Infinity Bar Pimping thread; I inquired with your concerning your cylinders on the Speed3 kites.


Axelrider:

Thank you for taking the time to type up your response.


Kami:

Thanks for the link.

-joedy


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sun Mar 11, 2012 8:49 am 
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joedy wrote:
Also, check Foilzone in the Infinity Bar Pimping thread;


Joedy, can you please post a link to this thread?

tnx


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sun Mar 11, 2012 9:33 am 
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joriws wrote:
If you want to visualize wind window I hope my tool helps you
http://www.jori.ws/kite_vectors/

Let us know when you've got your program back that includes the Speed3.
What L/D values were you taking for high and low aspect ratio tube kites?
It seems the value you took was not better than 4. I believe even tubes have far better L/D than that.
L/D of Speeds much approach that of paragliders (8+).

Afterthought: perhaps you are integrating the fact the kite's pull is not horizontal, yet another factor that should be taken into account.


Last edited by alexrider on Sun Mar 11, 2012 5:52 pm, edited 1 time in total.

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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sun Mar 11, 2012 1:00 pm 
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Location: Quebec, Canada
zob wrote:
joedy wrote:
Also, check Foilzone in the Infinity Bar Pimping thread;


Joedy, can you please post a link to this thread?

tnx

http://www.foilzone.com/phpbb3/viewtopi ... =1&t=12870


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sun Mar 11, 2012 3:37 pm 
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Posts: 8
Hi,

as you're talking about the shifting wind window, there's also this website with some interesting pics.
http://www.aeroandi.de/kitesurf-mechanik/das-sich-drehende-dynamische-windfester/

Image
Image

Cheers!


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sun Mar 11, 2012 6:13 pm 
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Posts: 171
alexrider wrote:
joriws wrote:
If you want to visualize wind window I hope my tool helps you
http://www.jori.ws/kite_vectors/

Let us know when you've got your program back that includes the Speed3.
What L/D values were you taking for high and low aspect ratio tube kites?
It seems the value you took was not better than 4. I believe even tubes have far better L/D than that.
L/D of Speeds much approach that of paragliders (8+).

Afterthought: perhaps you are integrating the fact the kite's pull is not horizontal, yet another factor that should be taken into account.


Actually "openness" of wind window is not calculated because I could not find any formula for it. Also sea current, board, snowboard, skis are not modelled as this is mainly ww rotation visualization tool.

So clicking HI-AR and LOW-AR only changes gradient of approx usable wind window. There were some discussion about gradients when I built the tool.

But like said there are so many variables..


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 Post subject: Re: Flysurfer Speed3 - The Ultimate Flying Machine
PostPosted: Sun Mar 11, 2012 6:19 pm 
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:lol1: :lol1: :desperado: :desperado: :desperado: :desperado: :desperado: :desperado: :happybirthday:


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