NACA Airfoils
10-20-2006, 06:37 AM
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NACA Airfoils
I am looking for NACA 00012 and NACA 00009 airfoil coordinates. I am building an F-16 Falcon from an older kit and I need to replace the wing cores. I need the coordinates in order to have the new wing cores cut.
I received the NACA numbers from the designer, but I have not been able to recreate the airfoil shapes.
Thanks,
Tim
I received the NACA numbers from the designer, but I have not been able to recreate the airfoil shapes.
Thanks,
Tim
10-20-2006, 02:53 PM
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RE: NACA Airfoils
Download and install Profili 2 from www.profili2.com . Included with the program is a subroutine that generates NACA airfoil files. From there you can either use the CAD dxf output or just take the coordinates from the generated data file.
10-20-2006, 03:00 PM
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RE: NACA Airfoils
ORIGINAL: TNeall
I am looking for NACA 00012 and NACA 00009 airfoil coordinates. I am building an F-16 Falcon from an older kit and I need to replace the wing cores. I need the coordinates in order to have the new wing cores cut.
I received the NACA numbers from the designer, but I have not been able to recreate the airfoil shapes.
Thanks,
Tim
I am looking for NACA 00012 and NACA 00009 airfoil coordinates. I am building an F-16 Falcon from an older kit and I need to replace the wing cores. I need the coordinates in order to have the new wing cores cut.
I received the NACA numbers from the designer, but I have not been able to recreate the airfoil shapes.
Thanks,
Tim
Those are VERY thin foils. Did you mean 0012 and 0009, 12% and 9% respectively? :-)
10-21-2006, 07:13 AM
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RE: NACA Airfoils
Thanks. I have tried CompuFoil3D, but they don’t list these airfoils in their database. I’ll try the Profili2.
The numbers came from the designer and yes, they are very thin. I thought that I had misread his email and I have reread it several times just to make sure of the numbers. I have not been able to make contact with him since that email, so I guess that I am on my own.
I am considering scanning the plans and importing the airfoil sections into CAD to create the geometry for the foam cutter.
I just thought that it would be better if I could generate the true NACA airfoil coordinates.
Thanks again,
Tim
The numbers came from the designer and yes, they are very thin. I thought that I had misread his email and I have reread it several times just to make sure of the numbers. I have not been able to make contact with him since that email, so I guess that I am on my own.
I am considering scanning the plans and importing the airfoil sections into CAD to create the geometry for the foam cutter.
I just thought that it would be better if I could generate the true NACA airfoil coordinates.
Thanks again,
Tim
10-21-2006, 04:14 PM
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RE: NACA Airfoils
TNeall,
IMHO, at least the wing airfoil is too thin. Even the real airfoil is a 64A204 (http://www.aerospaceweb.org/aircraft/fighter/f16/) which is a 4%. While I know scale foils don't usually work for our planes, you might have problems with the strength of the model's wing...especially the twisting. At least a thicker wing would be stronger and resist aerodynamic pressures better.
Butch
IMHO, at least the wing airfoil is too thin. Even the real airfoil is a 64A204 (http://www.aerospaceweb.org/aircraft/fighter/f16/) which is a 4%. While I know scale foils don't usually work for our planes, you might have problems with the strength of the model's wing...especially the twisting. At least a thicker wing would be stronger and resist aerodynamic pressures better.
Butch
10-21-2006, 05:46 PM
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RE: NACA Airfoils
CompuFoil has a NACA generator feature that allows the user to reproduce virtually any NACA airfoil. First, use the generator to reproduce the 64A205 (5% is the least thickness offered). Then use the change thickness tool from the main toolbar to reduce to 4%.
It is an extremely thin section for models!
It is an extremely thin section for models!
10-21-2006, 11:11 PM
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RE: NACA Airfoils
And here I thought that this was just a simple finger stutter typo. 
I agree that those airfoils are WAY too thin. You may as well just make the darn things from 1/4 sheet balsa and be done with it. Even a 20 inch chord on the 00012 would still only be 1/4 inch thick. You may want to look into this a little further. Have you got plans? Or if it's a fiberglass fuse can you put the top deck and bottom moldings togehter and see what thickness is suggested by the gap between them?
I agree that those airfoils are WAY too thin. You may as well just make the darn things from 1/4 sheet balsa and be done with it. Even a 20 inch chord on the 00012 would still only be 1/4 inch thick. You may want to look into this a little further. Have you got plans? Or if it's a fiberglass fuse can you put the top deck and bottom moldings togehter and see what thickness is suggested by the gap between them?
