When they were first trying to break the sound barrier in planes and achieve a sonic boom, how did they know something would actually happen considering they’d never done it before?

Question

When they were first trying to break the sound barrier in planes and achieve a sonic boom, how did they know something would actually happen considering they’d never done it before?

In: Physics

Answer 1

There were reports of planes being damaged in combat at high altitude and going into a steep dive before the pilot could parachute out and some weird things happening to the plane.