Chasing the Sound Barrier in a Leap from 23 Miles Up
nytimes.com
nytimes.com
The article neglects to mention that he'll be going supersonic in very thin air, so the stresses won't be as great as they would be for supersonic aircraft. Also, as the guy falls the air will get denser and he'll slow down to a more reasonable speed.
Has there been any modeling done to attempt to predict what will happen? This is a great time to make a prediction and see how well it holds later.
What a great story and project.