Developer Builds Python Tool to Convert NACA Airfoil DAT Files to DXF Format

A developer working on a comparative aerodynamic analysis project needed to import NACA 2412 airfoil coordinate data into the CAD platform OnShape, which requires DXF files rather than the DAT format used by standard airfoil databases. Finding no reliable online converter available, they wrote a Python script to handle the conversion. The script uses the ezdxf library to read DAT coordinate files, scale them to a desired chord length, and export a closed polyline as a DXF file. The tool also leverages matplotlib to optionally visualize the airfoil profile before export. The script has been shared publicly on GitHub for others working with similar aerodynamic modeling workflows.