NACA profile generator for AutoCAD

[quequen]

Here is a way to draw any kind of NACA 4 digit profile in AutoCAD. From AutoCAD you can export .dxf to any other software.
1: in this website you can generate the profile points:
http://www.ppart.de/aerodynamics/profiles/NACA4.html
copy the point list (whitout the profile title) and paste into a .txt file using i.e. the Notebook or Word

2: download the ascpoint routine here attached, is just a text file, open it with the notebook and pay attention to instructions. RENAME IT TO .lsp file extension, open AutoCAD and go to "load aplication", load the file, now you have a few new commands, put OSNAP off, write "ascpoint" at the command line and press Enter. Follow the instructions.

[quequen]

Here another web page to get naca profiles and their point lists:

http://www.worldofkrauss.com/foils/list

Attached a cup of .dxf examples drawn using this procedural.
When making .txt file having points, delete empty spaces at left of rows.

[keepeasy]

Yes, there is an application for Windows to draw the airfolis in Autocad, it is open source and you can find it at : http://sourceforge.net/projects/nacaairfoils/, if you see the files menu you can find NACA2D3D in VB6 (Visual Basic 6) with source code and it draws in 2D the airfoils allowing you to calculate a lot of parameters and 3D to draw it over a cylinder, you have to compile it. But there is also the package NACA2D with Visual Basic 2005 source code and executable.
Hope this helps!!!

[Izugarrin]

use the delft ship free module for rudders and keels!! is fantastic for this purpose ,but there are mesh surfaces....

[conceptia]

yes.. delftship and freeship modeller are cool.. You will see the exact shape in 3D.

[quequen]

Agree, off course...
Anyway, this metod brings you a way to model hundreds of 4 digits profiles, not just 12 pre-configured ones, so it can be useful for someone having interest on this kind of research (CFD etc.)

[quequen]

For those having interest on aero and hydro profiles, NACA profiles etc. here you have profili:

http://www.profili2.com/

Its intended to be an aeromodelism designer but has many capabilities to generate any kind of 2D NACA (even 6 series) and the free version exports to .dxf also. It's not as interactive as the first metod I mentioned (you can't interactively modify profile's shape while viewing it) but has many other posibilities. Registering, you can draw polars, play with Reynolds numbers etc.

[Adler]

1. www.maxknots.com/ITNetData/33/525.xls
2. sports.racer.net/tech_info/aero/naca_profile_calculator.xls
3. arcebus.net/NACAFoilDesign.xls
4. www.tvbf.org/docs/NACA%20Submerged%20Inlets.xls
5. http://www.duckworksmagazine.com/09/...3-with-Jig.xls
6. xa.yimg.com/kq/groups/10306322/1370166418/name/Rudders.xls
7. http://groups.google.com/group/Sketc...a9ccea8c3c9af1