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Old Jun 22, 2011, 04:04 PM
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-=Brian812=-'s Avatar
USA, MI, Owosso
Joined Sep 2004
172 Posts
Question
T vs. V

So what makes a T-tail better than a V-tail for DLG?

Just curious since a friend is ATTEMPTING to make a couple.
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Old Jun 22, 2011, 04:27 PM
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NCDLG's Avatar
United States, NC, Raleigh
Joined Sep 2010
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You may want to watch some of the videos guys have taken with keychain cameras to see how the launch of the DLG loads a tail set. You need to keep the model moving with the least amount of side slip "waggle" to retain energy on launch. The "T" works well but it's really more of a + than a T... and a Y is just silly. Sorry
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Old Jun 22, 2011, 10:07 PM
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-=Brian812=-'s Avatar
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K, thanks.
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Old Jun 23, 2011, 02:48 AM
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Quote:
Originally Posted by NCDLG View Post
... and a Y is just silly.
Seemed to work fine from what I saw 1 week ago in Poland.
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Old Jun 23, 2011, 09:03 AM
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What's the advantage? I have seen the x and the y but just can't seem to find any advantages or large performance gains over our commonly used + style. It does look like the gentleman in the picture could rip the arms off a gorilla so if he likes it, I'm cool with it. The mix would be interesting for rudder input...? Three servo tail one for rudder and two more for vtail mix...lol. you could get by with some very small stuff if three servos were required to run a setup like that. Innovations are the evolution of our toys for sure!
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Old Jun 23, 2011, 02:46 PM
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Polska, Śląskie, Bielsko-Biała
Joined Sep 2007
7 Posts
NCDLG thanks for describing me

In this thread:
http://www.rcgroups.com/forums/showt...ighlight=shark
at 86 post I describes the previous version of this model and general advantages and disadvantages.
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Old Jun 23, 2011, 08:41 PM
AustinTatious
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Hurst, Texas, United States
Joined Jul 2003
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Quote:
Originally Posted by Loet Wakkerman View Post
Seemed to work fine from what I saw 1 week ago in Poland.

I am sure it does work... However keep in mind that any time those Y tailfins are producing lift, two of the vectors are canceling each other out and producing more drag. The lifting surfaces only produce lift perpendicular to their plane.
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Old Jun 23, 2011, 10:36 PM
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Woodinville, WA
Joined Jul 2009
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Quote:
Originally Posted by -=Brian812=-
So what makes a T-tail better than a V-tail for DLG?
Are you talking about a T-tail with or without the vertical portion under the boom?

I can't see why a T-tail would have an much of an advantage over a V-tail. Less drag maybe, but much more stress on the tail itself since it would have more force on it from having to support the horizontal out there on the tip during the launch. At least the V-tail has both fins mounted on something stronger than a another fin.

For DLG, both T-tails and V-tails are terrible compared to a conventional + tail.

Y-tails? would like to know why they would have an overall advantage over + tails. Oh yeah.....they look cool!

Quote:
Originally Posted by AustinTatious
I am sure it does work... However keep in mind that any time those Y tailfins are producing lift, two of the vectors are canceling each other out and producing more drag. The lifting surfaces only produce lift perpendicular to their plane.
Wouldn't the drag be slightly less than a conventional + tail?

Joseph
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