Airfoil DAT to Spline

Airfoil DAT to Spline



All aircraft developers struggle to make airfoils for wings, tails, or propellers. A manually created spline will not guarantee the precision of the shape. Airfoils are represented as a set of X and Y coordinates in the DAT files. These coordinates should be multiplied on the wing chord to get real X and Y coordinates of all points.


This script automates the creation of spline on a selected construction plane or origin plane from any DAT file with a defined chord length.


DAT files could be found from the following sites: 

About This Version

Version 2.0.0, 7/7/2021
Added: Added processing of Lednicer file format (v2.0) Added angle of incidence (Aoi) parameter, fixed orientation on YZ and XZ planes (v1.8) Bugfix with comma-separated values without spaces (v1.7) Processing of comma-separated files (v1.6) Unlimited chord length for 1:1 scale aircraft (v1.5) Bugfix on Mac OS (v1.4) Offset X and Offset Y parameters (v1.3) Scale Y parameter (v1.2) selection of construction plane or origin plane (v1.1)

Screenshots and Videos

Customer Reviews

21 reviews
Get Technical Help
  • DAT file?
    Christian Moser | September 19, 2021 Verified Download (What's this?)

    Hi Sergey

    Looking at your video and the other ratings your add in must be great. Installation in Fusion worked without any problems.

    Unfortunately I do not manage to create the DAT file. I copy the airfoil coordinates in excel but do not have the option to save as .DAT.

    I can only save it as .CSV but your add in does not allow me to use this file.

    How can I create the .DAT file?

    Thank you very much.

  • How can I resolve the Error?
    강빈 이 | May 22, 2021 Verified Download (What's this?)

    I saved a DAT format file from ''.

    But I'm faced the Error like Figure.

    Sergey Ivanov (Publisher) | May 24, 2021

  • Perfect!
    Daniel Philipp | February 13, 2021 Verified Download (What's this?)

    Unlike other Airfoil tools for Fusion 360 this one actually does what it's supposed to do!

  • Fantastic
    Mario Miano | January 12, 2021 Verified Download (What's this?)

    it works perfectly at first try. Thanks!

  • Great App
    Jared Schlamp | December 27, 2020 Verified Download (What's this?)

    Thanks for the great app!

  • Position in space ?
    marty | November 24, 2020 Verified Download (What's this?)

    Its works fine on YZ plane, but if I try to use it on a plane at say 100 mm offset from YZ plane, the spline seems to be placed at a wrong position.

    (I use Macintosh version)


    Sergey Ivanov (Publisher) | November 25, 2020

    I haven't MacOS computer to reproduce the error. Try to ask your question in this thread. Someone will help, I believe. Provide all steps you performed with screenshots or results.

  • good
    Hudson Kortus | October 26, 2020 Verified Download (What's this?)

    some initial issues, but works now

    Sergey Ivanov (Publisher) | October 27, 2020

    Hi! If you have invalid DAT file it doesn't mean that application is bad. So, one star also invalid. Just send me by e-mail DAT file and I'll say what is wrong.

    Simon shemetilo | January 12, 2021

    are you sure you put .dat at the end of your notepad save file.

  • Besoin d'aide
    Claude Bélanger | September 19, 2020 Verified Download (What's this?)

    Je n "arrive pas à installer, impossible de décompresser le fichier, pourquoi?

  • Nice addon
    Дмитрий Шапиро | March 06, 2020 Verified Download (What's this?)


  • Must have app for modeling wings
    Dincer Aydin | August 08, 2019 Verified Download (What's this?)

    Have been using it since first versions. Works great and keeps improving. Thanks a lot!

  • Airfoil dat to spline
    Kalle Ström | March 15, 2019 Verified Download (What's this?)

    Super easy to use and build up wings with. The airfoils get a bit big and slow things down so i recomend to use this with  airfoil dat optimizer.

    Super work! Thanks a lot!

    Sergey Ivanov (Publisher) | April 02, 2019

    Can you add review on Airfoil DAT Optimizer script itself? Thanks!

  • Import airfoils in .dat format
    Marc Schafer | December 25, 2018 Verified Download (What's this?)

    It works very well, but make sure you have a plane selected otherwise you get an uninformative error message.

    I do wish that I could import the airfoli into an existing sketch instead of having a new one created.

    Also, Fusion 360's performance with this large a spline can get pretty bad so put it where you want it and do everything else around it.

    Sergey Ivanov (Publisher) | January 11, 2019

    As many users as many preferences. However, I agree that performance of Fusion 360 degrades with a lot of vertices. To avoid it I have separate (not published yet) script which optimize DAT file and saves it as separate one with minimized number of points. If you like to test it, drop me an email, I'll send the script for manual installation.

  • nice app
    Chauvin Xavier | May 01, 2018


  • Nice Addon
    Dean Herzig | February 16, 2018 Verified Download (What's this?)

    Many thanks for this nice feature, it works great. And the Support was very fast and helpful. Thanks a lot

  • a great application
    Ricardo Veiga | January 25, 2018 Verified Download (What's this?)

    It works perfectly ... users wait for the new update

    Sergey Ivanov (Publisher) | February 02, 2018

    Ricardo, stay tuned. Version 1.6 is comming... ;)

  • macOS installation
    Klaus Kreis | December 07, 2017 Verified Download (What's this?)

    installation works well, application is very helpful, it will replace other airfoil processing apps

    Sergey Ivanov (Publisher) | February 02, 2018

    Klaus, thank you for tests on Mac OS platform. UPDATE Dear MacOS users, Please read following thread on forum. Thank you!

    Klaus Kreis | January 10, 2019

    the .dat file has to have the correct header line, correct decimal and field delimiter, in the worst case I used a normal line editor available on my mac to correct the format.

    dbrondy dbrondy | March 03, 2019

    Hi Sir, It means you successfully installed it on MacOSx ? I tried on mine using Mojave and I can't see the provided script.... Does the installation is broken on Mojave ? Tks ! denis

  • Great help
    Michael Christou | December 07, 2017 Verified Download (What's this?)

    It works great, it saves me a lot of time. Thank you for sharing.

  • Great Job
    Mathias Verbeke | December 06, 2017 Verified Download (What's this?)

    Thank you very much, really helpful!

  • Nice app
    Sebastian Kentler | November 20, 2017 Verified Download (What's this?)

    Works very well

  • airfoil DAT app
    Davesters Davesters | November 11, 2017

    Really works Thank you

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