Webfoil is a free, web-based airfoil design tool that also serves as a database that contains information and numerical data for each airfoil.

Coordinates, numerical data, and other information related to the airfoils are available on the Database page.

On the Analysis page, there are two tabs: Analyze and Optimize. In the Analyze tab, the airfoil geometry is depicted graphically, along with the numerical data from the database plotted on several graphs. The Mach number and Reynolds number can be varied to show different data sets. The coefficients of lift, drag, and moment are displayed for a user-specified angle of attack.

In the Optimize tab, the selected airfoil is optimized based on conditions specified by the user. Multipoint optimization for more than one condition is also supported, for which the weight of each condition can also be specified.

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