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Old Dec 26, 2011, 07:45 AM
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Vernon Hunt's Avatar
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Thermal wing

Hey! This is good for us flying wing enthusiasts.

I'm currently building a thermal glider based on a wing that I experimented on almost 13 years ago. I'm still playing with the idea light weight is better, so this wing is carefully constructed from light foam cores, and light 1/16" balsa. Some carbon tow acting as spars.

Vern

OOOps its not a Horten wing NEVERMIND
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Old Dec 26, 2011, 10:33 AM
less is more
Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
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Quote:
Originally Posted by Vernon Hunt View Post
Hey! This is good for us flying wing enthusiasts.

I'm currently building a thermal glider based on a wing that I experimented on almost 13 years ago. I'm still playing with the idea light weight is better, so this wing is carefully constructed from light foam cores, and light 1/16" balsa. Some carbon tow acting as spars.

Vern

OOOps its not a Horten wing NEVERMIND
That's the cool thing about the Nurflügel forum. ANY wing only is welcomed. Tip rudders are fine. A little pod fuselage is fine. I use the German forums as an example of what is and is not a Nurflügel type plane.
I'd suggest the we error on the side of "anything goes" just to be sure we don't restrict imagination.

I'm subscribed!

So Vern, this one looks done already. Sweet. What's the story behind this one....
Will it have tip rudders? All the other skinny wings like this have tip rudders. I know that mine needed them.
Is there any twist in that wing?

Kent
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Last edited by Knoll53; Dec 26, 2011 at 10:49 AM.
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Old Dec 26, 2011, 02:05 PM
a wing is enough
Tail Saw's Avatar
Germany
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Originally Posted by Vernon Hunt View Post
OOOps its not a Horten wing NEVERMIND
No problem Vern,

as Kent wrote, any wing is welcomed. The transition from pure wing to any other wing is smooth.
The green Horten wing project called "Dogma" has very small wingtips.
Is this still a Horten or not?
My colorful RES-Wing Ares has a nearly bell shaped lift distribution
at small angles of attack, but it has winglets. Horten, flying wing, Nurflügel, tail plane without tail...what is it?
I see winglets as wing components, not as tail parts, but where is the border?

As long as it flies well, the definition does not really matter.....
ARES, 2. Tag der Flugerprobung (6 min 23 sec)


Please report here about your project, this is the right category

Regards,

Uwe.
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Old Dec 26, 2011, 02:19 PM
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Yea! Thanks guys.... Just didn't want to gum up a good thing.

I will keep reporting on my progress. Yes, it has tip rudders.

Vern
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Old Dec 26, 2011, 04:21 PM
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Originally Posted by Tail Saw View Post

Please report here about your project, this is the right category

Regards,

Uwe.

Uwe,

The wing in the third und fourth photo are the wing type I am interested in. Can you tell me more about that wing please?
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Old Dec 26, 2011, 04:44 PM
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Originally Posted by TestUser01 View Post
Uwe,

The wing in the third und fourth photo are the wing type I am interested in. Can you tell me more about that wing please?
Here you go...

http://thermik-board.de/nurfluegel-f...asse-t421.html

Brian
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Old Dec 26, 2011, 07:39 PM
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Florida
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Here are a few specks for this wing. 100" wingspan, 25deg. of sweep. So far it weighs 21ozs. The cores are cut in 3 sections per panel. It has progressive twist, ending at 4.5 degs.
I plan to cover this wing in Esaki yellow tissue, maybe blue rudders. I spent the past year re-learning my old stick and tissue days as a kid. This gave me the hope of building light for my new wings. I hope it doesn't flutter like my first version 13 years ago. That wing had no spars and would flutter like a swim fin on the tow line till it slowed down, very funny. This wing has carbon tow top and bottom in forward and rearward position.

Vern
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Old Dec 26, 2011, 07:57 PM
Needs brain lubrication
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Aachen, very western Germany
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That's what I call beauty.

What airfoil(s) does it use?

biber
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Old Dec 26, 2011, 11:05 PM
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Thanks!!
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Old Dec 27, 2011, 02:41 AM
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as Biber says...it looks beautiful Vern
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Old Dec 27, 2011, 04:02 AM
internet gadfly
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as Biber says...it looks beautiful Vern
Me too
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Old Dec 27, 2011, 07:25 AM
Deniable plausibility
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Me too
Me three!
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Old Dec 27, 2011, 09:57 AM
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Thanks! Biber, miniphase,nmasters,shedofdread,tailsaw,

I think I got you all. The airfoil is a modified SD 7037/ S7003. I made the templates years ago and I'm still using them.
I wanted to do removeable tip rudders, but they were to flimsy. I also wanted to do a two piece wing so I could fit it into my tiny car, too heavy. So I've glued it all together with a spar at the center. Today I'll try and get the tow hooks ready. I use two hooks outboard for less stress and safer towing.

Vern
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Old Dec 27, 2011, 10:07 AM
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You just couldn't leave the SD7037 alone, could you
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Old Dec 27, 2011, 11:11 AM
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Florida
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Kent,
It was there for the picking, and I couldn't resist.

vern
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