and this
I dont understand it but can tell you it is the out put from a series of wind tunnel tests on an La7
L is the angle the AC was placed at to the wind tunnel flow AOA? (i have a series of photographs showing this)
What Cx and Cy are I am not sure but I suspect Cy has something to do with lift and that may mean Cx has someing to do with drag both of which could be discerned from load cells on the support frames............
Air velocity is constant for all tests
There are some other ancillary graphs with it that I do not understand either.