"Boris" wrote in message
ups.com...
Do any readers know what particular plane in World War 2,
was rumored to have broke the sound barrier ?

There were lots of claims of WWII aircraft breaking the sound barrier. The
P-47, Me-262, and Me-163 come to mind. The claims have been pretty well
debunked because none of those aircraft would have been controllable beyond
..85 or .9 mach. Beyond that, no WWII aircraft had enough power combined or
a clean enough airframe to go that fast. Consider that the F-86, with far
more engine power and a swept wing was *barely* supersonic, and only in a
steep dive.

KB