dihedral angle wings for surf

[asier esnal]

it has been discussed in other post about the dihedral angle wings. but none about surfing because it is something new. I'm doing a wing of 1000 area. a dihedral angle of 4.5g. with a central profile CLARK YM-15 AIRFOIL and lateral CLARK Y

I have a lot of self strength stabilizer, there is this idea, I have not kite or sail, oar to hold me either, so I used the wings hydro boat designs

I have a question. I angle rope I can give the wing with the mast so as not to stall soon but have very many stall? . if I stop the mold as in the picture in the center I have 5 degrees and the ends 2, this will help me a smoother entry into loss

in these photos it is that the wing has much angle rope, commented this that have nothing to do with these wings kite surfing. what do you think? one is gofoil and the other f one

[Peter_Frank]

Hi - a few questions ?

Do you ride a hydrofoil now ?

I assume so, since you are talking about a "surf" wing - which a beginner normally would not.

But 1000cm2 and a superthick Clark Y ???

I ride a 570cm2 with some dihedral in waves which is perfect, and my 600cm2 higher AR less dihedral also fine in lighter wind.

But my 800cm2 is IMO too big and slow for this most often - so I disagree that the bigger the better

Unless you are heavy of course, then things are different, but I would never go over 700-750cm2 if a typical profile.

Surfing with a hydrofoil is not something new though - it has been done since the very start

Peter

[asier esnal]

by the measures you recommend I think you're talking about kiteboarding. I do not

1000 area is good is what is used for these cases. profile I think I'm fine too. my question is the cord angle of the average profile relative to fuselage

I hope this video can help

I speak of a hyrofoil surfing in the video that I attached. I want to days of small waves, days of broken waves because of the wind ...

https://www.youtube.com/watch?v=h7XupqFOFSg

https://www.youtube.com/watch?v=TA3Mj_gN44o

[Peter_Frank]

Aaah, okay sorry I did not get that at first (as a kitesurf forum my mind was set on that...)

Regarding anhedral/flat/dihedral I think it is very difficult, as it is not only ONE parameter that determines how the hydrofoil will turn - it is each and every little thing combined that makes a foil work (turn) well and balanced, or not.

Besides the front wing, it is the position of the mast, the type of fuselage used, the length and the rear wing and stab or not, up/downswept rear wing tips, and even the mast profile changes things also.

I cant help you there, too many interactive variables - maybe some got some ideas what they think will work and have tested, but maybe their ideas come from experiences that also are determined by the combinations they have ridden thus you can not tell how a single parameter influences - it is the FULL packet

And yes, it is REALLY new, to surf with a hydrofoil like that and not tow in, amazing

What about SUP's, are there any forums for SUP hydrofoiling ?
As if, you might be able to get some experience from these too

PF

[asier esnal]

What about SUP's, are there any forums for SUP hydrofoiling ? there is, especially the two I have attached, gofoil and f one, you may not know any more

I have also seen using in sup, hydrofoils windsurfing http://www.ahd-boards.com/fr/models/afs-1/ and http://www.horue.fr/

[ronnie]

What about SUP's, are there any forums for SUP hydrofoiling ? there is, especially the two I have attached, gofoil and f one, you may not know any more

I have also seen using in sup, hydrofoils windsurfing http://www.ahd-boards.com/fr/models/afs-1/ and http://www.horue.fr/

The AHD seems to have flat wings.


Flat wings?


Flat again?


Surfing with anhedral wings.

[asier esnal]

hydrofoil boat typical system, these forms are self stabilizing, perfect for not seasick passengers.

for my design I've forgotten everything I learned and I started from the beginning 1898. I attached a patent that it seemed very interesting.I can this wrong and be a total failure, but I feel like a lot doing this kind of configuration, as I see it has been using for so long and in vessels not have to balance. as of today there are modern electronic systems that compensate for the rolling and can use hydrofoils planes

all this thinking the hydrofoil to surfing, to kite is totally inadequate

https://www.google.com/patents/US3464377 2 Sep 1969

https://www.youtube.com/watch?v=qc4seYw9T5Q
https://www.youtube.com/watch?v=doiemVoDcgY

[ronnie]

You seem to be interested in surface-piercing dihedral wings for surfing because they are self-stabilising?

Is that what you mean?

[asier esnal]

I mix the two ideas, the hydrofoil kite and self-stabilizing

I do not want hydrofoil wings break the water surface, so in this first attempt I have given few degrees but also want self-stabilizing. a stable surf the ability to forget the balance to give more enjoyment of the sea

[asier esnal]

I have simulated the hydrofoil in 3d, I have also made a basic calculation of hydrodynamics wing. the rear wing is folded mast aluminum and aluminum fuselage also tapped my previous attempt