It seems that the F-22 uses a commercial NACA airfoil for its wings. According to aerospaceweb.org, the F-22 uses NACA 64A?05.92 at the root and NACA 64A?04.29 tip. Why doesn't the F-22 use a custom supercritical design?
cola wrote:em745, how did you figure, the F22 doesn't have a supercritical wing?
The F-22's airfoil as cited by aerospaceweb.org has been shown to be a very thin symmetric airfoil with a relatively sharp leading edge. It doesn't appear to be supercritical. I can't quite find an image but I seem to remember one website actually plotting the F-22's airfoils at some point.
While I can't confirm whether the airfoil on the F-22 is "off the shelf" or not, I will say this. If the "off the shelf" version works sufficiently for the needs of the F-22, it's going to be used instead of a customized version purely for production cost purposes. Everything that is customized always costs more than a generic "off the shelf" version.