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#1 Vernon Hunt Dec 26, 2011 07:45 AM

Thermal wing
 
5 Attachment(s)
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

#2 Knoll53 Dec 26, 2011 10:33 AM

Quote:

Originally Posted by Vernon Hunt (Post 20234214)
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

#3 Tail Saw Dec 26, 2011 02:05 PM

4 Attachment(s)
Quote:

Originally Posted by Vernon Hunt (Post 20234214)
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.

#4 Vernon Hunt Dec 26, 2011 02:19 PM

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

#5 Lou Dec 26, 2011 04:21 PM

Quote:

Originally Posted by Tail Saw (Post 20236656)

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?

#6 cpdude Dec 26, 2011 04:44 PM

Quote:

Originally Posted by TestUser01 (Post 20237623)
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

#7 Vernon Hunt Dec 26, 2011 07:39 PM

5 Attachment(s)
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

#8 biber Dec 26, 2011 07:57 PM

That's what I call beauty. :)

What airfoil(s) does it use?

biber

#9 Lou Dec 26, 2011 11:05 PM

Quote:

Originally Posted by cpdude (Post 20237779)

Thanks!!

#10 miniphase Dec 27, 2011 02:41 AM

as Biber says...it looks beautiful Vern

#11 nmasters Dec 27, 2011 04:02 AM

Quote:

Originally Posted by miniphase (Post 20241449)
as Biber says...it looks beautiful Vern

Me too:popcorn:

#12 Shedofdread Dec 27, 2011 07:25 AM

Quote:

Originally Posted by nmasters (Post 20241630)
Me too:popcorn:

Me three!

#13 Vernon Hunt Dec 27, 2011 09:57 AM

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

#14 Knoll53 Dec 27, 2011 10:07 AM

You just couldn't leave the SD7037 alone, could you:)

#15 Vernon Hunt Dec 27, 2011 11:11 AM

Kent,
It was there for the picking, and I couldn't resist.

vern


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