Airfoil coordinates import function in GNU Octave.
Provided code is tested with GNU Octave 6.4.0.
Run importAirfoil.m with the full path to document with airfoil data as only input argument. Please check provided test.
- The file is read a line at a time starting from the top.
- Blank lines are discarded.
- The first line that is not discarded is the line on which function
sscanf()finds two float numbers, with the first number in the range [-0.1, 1.1] and the second in the range [-1.1, 1.1]. - All subsequent lines on which function
sscanf()finds two float numbers are taken into the account. - If any value is greater than 1.1 all values are divided by 100 (see NACA file format).
- If there is one change in x value gradient, flip data that is after the change of gradient (see Lednicer file format).
Lists points from the trailing edge, goes over the upper surface, then over the lower surface, to go back to the trailing edge (or in other direction, first lower and then upper surface).
- Lednicer
Lists points on the upper surface (from leading edge to trailing edge), then points on the lower surface (from leading edge to trailing edge).
- OpenVSP .af
Same as the Siegel format but with the additional header.
- NACA (as in Report No. 824)
Same as the Lednicer format but multiplied by 100.
Copyright (C) 2022 Miloš Petrašinović info@vazmfb.com
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