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03-18-2014, 09:25 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,931
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Shark skin
This is interesting. Can we gain a few knots with a shark skin vinyl wrap?
http://www.redbullairrace.com/m/en_GB/article/shark-sky
__________________
Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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03-18-2014, 09:33 AM
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Join Date: Jul 2005
Location: North Atlanta
Posts: 1,120
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I can say with 100% certainty that some textures on a wrap reduce drag dramatically. Wind tunnel tests were done. Think golf ball and reverse golf ball patterns.
__________________
Sid Lambert
RV-7 Sold
RV-4 - Flying - O-320 Fixed Pitch - Red over Yellow
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03-18-2014, 09:21 PM
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Join Date: Dec 2009
Location: Jupiter FL.
Posts: 451
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Quote:
Originally Posted by wirejock
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We are game if you wanta give it a go! 
__________________
VAF DUES 7/13, 12/13, 03/14
Founder/Director
www.Aircraftwraps.com
Replace paint with performance.
This is my personal account and does not reflect the official communications of Aircraftwraps.com. We have retained a username for such correspondence. I post about formation, eating, aerobatics and pilot stuff .
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03-19-2014, 08:11 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by Sid Lambert
I can say with 100% certainty that some textures on a wrap reduce drag dramatically. Wind tunnel tests were done. Think golf ball and reverse golf ball patterns.
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Can you share the test results, please.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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03-19-2014, 12:26 PM
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Join Date: Sep 2007
Location: BC
Posts: 1,674
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Quote:
Originally Posted by Sid Lambert
I can say with 100% certainty that some textures on a wrap reduce drag dramatically. Wind tunnel tests were done. Think golf ball and reverse golf ball patterns.
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The only wrap with texture that I have seen has the carbon fiber look. Is this is what preformed better in the wind tunnels?
Bevan
__________________
RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
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03-19-2014, 01:34 PM
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Join Date: Jul 2005
Location: North Atlanta
Posts: 1,120
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I can't give much more info than that.
We make a printer that prints texture. We can print any texture on top of a wrap film. The texture can be up to 3/16" high in clear ink with a very smooth edge.
__________________
Sid Lambert
RV-7 Sold
RV-4 - Flying - O-320 Fixed Pitch - Red over Yellow
Last edited by Sid Lambert : 03-19-2014 at 01:43 PM.
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03-19-2014, 06:58 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,931
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Testing
This would be an interesting test.
I'm still trying to get my head around the possibilities with the wrap.
My original paint scheme is out the window now that I can basically do anything.
__________________
Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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03-19-2014, 08:48 PM
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Join Date: Dec 2009
Location: Jupiter FL.
Posts: 451
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Quote:
Originally Posted by Bevan
The only wrap with texture that I have seen has the carbon fiber look. Is this is what preformed better in the wind tunnels?
Bevan
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Sorry to correct, but we have over 30 different textures. Gator skin to brushed titanium.
__________________
VAF DUES 7/13, 12/13, 03/14
Founder/Director
www.Aircraftwraps.com
Replace paint with performance.
This is my personal account and does not reflect the official communications of Aircraftwraps.com. We have retained a username for such correspondence. I post about formation, eating, aerobatics and pilot stuff .
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03-19-2014, 10:11 PM
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Join Date: Aug 2009
Location: Goodyear, Arizona
Posts: 877
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I have shark skin textured "jammer" swim trunks that I use on my masters swim team. I couldn't tell any difference from my normal swimsuit, but that's probably because I lack talent and am the weak link on my team.  I did some research on the whole shark skin thing before buying my swim trunks, and it's the real deal. The shark texture actually does reduce drag. It would be interesting to see if it could improve parasite drag on an aircraft.
__________________
Karl, Goodyear, Arizona (KGYR) ATP, CFII
RV-14A, Flying
Extra 330LX, Flying
RV-8, Sold
RV-7, Sold
Bearhawk 4-Place, Sold
=VAF= donor 2020
Last edited by Gash : 03-19-2014 at 10:13 PM.
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03-19-2014, 11:52 PM
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Join Date: Oct 2009
Location: Victoria, BC, Canada
Posts: 3,926
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Quote:
Originally Posted by Gash
I have shark skin textured "jammer" swim trunks that I use on my masters swim team. I couldn't tell any difference from my normal swimsuit, but that's probably because I lack talent and am the weak link on my team.
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Also consider that as "jammers" they only cover 1/4 to 1/3 of your skin at best. Unless you're waxing for speed, the rest will have a layer of hair which adds lots of drag, so the benefits of the shark skin texture will probably be very hard to find.
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
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