FreeCAD ImportAirfoil Macro (FreeCAD-UveziAeroprofil na Engleskom)
FreeCAD Macro for Airfoil coordinates import. It is possible, using simple dialog, to scale the airfoil, rotate, translate in the plane, translate along the span, select the plane and the main axis, as well as turn the geometry into a sketch. It is possible to import coordinates saved in the most commonly used formats.
Airfoil import is based on: https://github.com/VAZMFB/Python-importAirfoil
Provided macro is tested with FreeCAD 0.19.
If the Addon Manager is not used, the macro can be installed manually.
- Copy the Python code from the corresponding macro page.
- Open the macros menu
[Macro/Macros], press[Create], and give it a name. - Paste the Python code that you copied.
- Press the
[Save]button, and restart FreeCAD. - To use it, open again the macros menu, select your new macro, and press
[Execute].
An open spline (type BSpline) is formed. Each airfoil is processed in order to open the geometry at the trailing edge and then close the geometry at that point with a straight line (TEdge). The aim of this modification is to obtain a single surface of the upper and lower part. Only one surface that is closed at the point of trailing edge with another surface is needed (otherwise the surface may be divided by the leading edge, which is not suitable for further finite element analysis).
Run the macro program and follow the instructions.
Copyright (C) 2022 Miloš Petrašinović [email protected]
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.