Inside Out Library · ExploreAerodynamic Characteristics of Twenty-Four Airfoils at High Speeds (1930)NASA Technical Reports Server (NTRS) · leaf 13*— — —Polar diagrams for airfoil C4 for five values of Vjc Figure 21NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Aerodynamic Characteristics of Twenty-Four Airfoils at High SpeedsMore like this
