Been working on this for a while and finally released it. YFoil Aero runs entirely in your browser — open the link, start analyzing. No installation, no backend, completely free.
The entire thing — physics engine, panel solver, LLT, and the full NACA polar database — lives in a single HTML file. That was a deliberate choice: zero friction for the end user.
Under the hood: Nonlinear LLT (30 Fourier modes), Hess-Smith panel solver with Head boundary layer, real NACA polar data from Abbott & von Doenhoff (1959), wave drag, ground effect, static margin, XFOIL polar import.
Not trying to replace XFOIL or OpenVSP. Just wanted something fast and accessible for students doing early-stage design or trying to understand wing aerodynamics without a 2-hour setup. Accuracy limits are fully documented.
🔗 Live: https://mechanicfurkan.github.io/YFoil-Aero
🔗 Source: https://github.com/mechanicfurkan/YFoil-Aero
Happy to discuss the physics or compare results if anyone's interested.