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Would you like a sample polar analysis or help converting airfoil coordinate files for JavaFoil?

| Issue | Solution | |-------|----------| | JavaFoil.jar won’t open | Right‑click → Open with → Java(TM) Platform SE binary | | “Unsupported Java version” | Use Java 8 or 11 (JavaFoil may warn but works up to Java 17) | | No graphs appear | Enable Java 2D graphics – ensure your OS has GPU/drivers working | | .dat airfoil format error | Coordinates must be from leading edge → upper surface → trailing edge → lower surface (no duplicate TE point) | javafoil download