rick_little99 wrote:
A friend and I were having a debate on a rumour that we once heard.
The rumour went along the lines, If concorde (or and other supersonic
aircraft for that matter) was fitted with guns then the bullets would
not be able to leave the muzzle or it would shoot itself if it fired
them while cruising. Assuming that the bullets velocity and the speed
of the aircraft are the same, what are your thoughts on what would
happen?

Only if it's on a conveyor belt also going the speed of sound in the
opposite direction. ;^)