However, it is worth remembering that the stores hanging from the aircraft in question will also have a flight envelope of their own to be adhered to, and this might be the limiting factor in how fast you can go!
I have heard that the limitations imposed by underwing stores are quite large. Apparently an F-111 can supercruise clean, but stores dramatically reduce its top speed and manouverability. I have also been told it has a far more dramatic effect on the F/A-18 as this aircraft has far less kenetic energy to start with. Not being an FJ pilot, I don't actualy know myself.
Probally worth a post in Tech log or FTE threads.
