This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Airfoil. en Geometry similar to an airfoil for the purpose of calculating twist angles own Easc aero ortega Airfoil diagrams used in University of Florida course EASC Mechanics of Aircraft Structures
Page 2023 Free-images.com. All images are Public Domain