NACA 0025

grabcad

The symmetrical four-digit NACA airfoil is determined by an equation, where you can substitute your desired length in place of '156' in the Yx and X2 parameters. If you want a different NACA 4-digit airfoil, simply divide the last two numbers in the designation by 100 and replace the first decimal value in Yx. For instance, NACA 0035 would become .35, while I used .25 for NACA 0025.