Which was the frst aircraft to cross the sound barrier?
An interesting historical sidebar concerns the term "sound barrier." When a British aerodynamicist named W. F. Hilton was interviewed on his high-speed experimental work, he was quoted as describing "how the resistance of a wing shoots up like a barrier against high speed as we approach the speed of sound." The newspapers of the period misconstrued his statement to mean that there was some sort of physical barrier to travel at or beyond the speed of sound, so no aircraft would ever be able to reach those speeds.
In addition, there was some theoretical work done that had indica ...more
(from Britannica Encyclopedia)