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by Hansen Design
Sun Jul 12, 2020 4:10 pm
Forum: Hydrofoil
Topic: Off Topic - America's Cup Sailing - Foiled Monohulls
Replies: 44
Views: 3071

Re: Off Topic - America's Cup Sailing - Foiled Monohulls

IMOCA 60 also has an interesting approach to monohull foiling.
by Hansen Design
Sun Mar 22, 2020 12:03 am
Forum: Kitesurfing
Topic: Free kite plans on GitHub
Replies: 286
Views: 56245

Re: Free kite plans on GitHub

Hello VP22:
Make your bladders out of PE/PA/EVOH/PA/PE film. Half the weight of TPU, heat sealable and strong. Just make sure they fit your tubes and slightly larger. You can also use PE/PA/PE food preservation film. Super light and cheap.
Cheers!
by Hansen Design
Thu Aug 08, 2019 4:11 pm
Forum: Kitesurfing
Topic: Bladderless Construction
Replies: 8
Views: 1137

Bladderless Construction

Inflatable kites are the only widely distributed product that still relies on a sewn case and internal bladder with associated expense, weight and producer / consumer frustration. For quite some time I have been advocating to nearly every major brand, fabric suppliers and production facilities to pu...
by Hansen Design
Sat Aug 03, 2019 7:43 am
Forum: Kitesurfing
Topic: WinGsurfing; surfplan help
Replies: 47
Views: 3906

Re: WinGsurfing; surfplan help

Hello Wingstu.
Not sure which version you are using. Select the canopy shape menu and choose detailed / change. Input negative values for dihedral.
Cheers!
by Hansen Design
Sat Aug 03, 2019 4:54 am
Forum: Kitesurfing
Topic: WinGsurfing; surfplan help
Replies: 47
Views: 3906

Re: WinGsurfing; surfplan help

Easy to sew Twin Strut WindWing
Twin-Strut-WindWing-1.jpg
Twin-Strut-WindWing-2.jpg
Twin-Strut-WindWing-3.jpg
by Hansen Design
Sun Apr 21, 2019 6:59 pm
Forum: Wingsurfing
Topic: The Duotone Wing
Replies: 346
Views: 30534

Re: The Duotone wing

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 unw...
by Hansen Design
Thu Apr 04, 2019 5:38 pm
Forum: Kitesurfing
Topic: does anyone else care about linear bar response?
Replies: 28
Views: 1542

Re: does anyone else care about linear bar response?

Theoretically, lift is mostly linear with AOA up to stall. Foils with speed systems maintain the front towpoint and tip the profile uniformly with bar movement. Inflatos have a wide variety of bridle systems which allow towpoint movement and structural shape changes which may or may not be proportio...
by Hansen Design
Tue Mar 19, 2019 8:48 pm
Forum: Foil Kites
Topic: Disconnecting Z or more at the tip
Replies: 24
Views: 2775

Re: Disconnecting Z or more at the tip

For the limited design brief, none. It is a worthy improvement.
by Hansen Design
Tue Mar 19, 2019 5:27 pm
Forum: Kitesurfing
Topic: Good kite for boat
Replies: 69
Views: 3876

Re: Good kite for boat

Hello Munti:
PM sent.
Cheers!
- Bill

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