Originally Posted by
megan
According to "Aero for Naval Aviators" and NASA the normal CoP is generally at about 25% chord, supersonic it moves to generally about 50%, that being the case I think CoP movement would have far greater effect than the change in downwash on the tail, hence effects at the tail generally don't get mentiponed.
If it only were that simple. For one, the effect of "downwash on the tail" acts on much longer lever, assuming that this is a conventional layout. For another, it presumes a certain wing shape and a particular profile (or lack of) washout. As the 2nd figure in the above Airbus doc shows, the movement can be exactly in the opposite direction.
This is a very rich topic if you are excited by this sort of stuff, and you just made me recall that I have on my shelf "Mach 1 and beyond" by Larry Reithmaier who tries to cover it all without any formulas. Just a lot of diagrams and pictures. Thanks for reminding me - it's due for a re-read.