This post is a summary of my experience designing a model airplane flying wing based on the NASA Prandtl experimental flying wing. I then built a very simplified version with the help of Paul Voss using his CNC foam wing cutter. These notes aren’t complete and mostly just a personal storehouse in case I return to the project. If you ask, I’ll dig up more.
The Prandtl-D is a tailless wing design that uses washout to generate yaw stability instead of the usual vertical stabilizer configuration. For this project, I studied the Prandtl-D documentation from “On Wings of the Minimum Induced Drag: Spanload Implications for Aircraft and Birds” by Bowers et. al.
Software Used:
- XFOIL5 – Inputted the airfoils and wing parameters from the paper. Also generated several simplified versions with fewer wing segments. I think 5 and 2. See work folder below.
- Autocad Fusion 360 – Generated a 3D model based on the mesh exported from XFOIL. Not really sure why I did this. Maybe I was planning on 3D printing something?
- Paul Voss’ custom CNC foil cutting software – files are included in the work folder.
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