The QueSST (Quiet Supersonic Transport) is a project to create a more diffuse sonic boom in order to use supersonic flight commercially without the usual abrupt 1~2 psf pressure spike damaging the environment.
I understand that traditionally jets create 2 supersonic booms, at their tail and their tip, and I assume that the new quieter jet is spreading out that pressure change over the length of the plane.
I just don't understand why the sonic booms were happening at the tail and tip to begin with, or what changed to spread them out.
Why was this problem so hard to solve, and what did NASA change to solve it?
If it helps, here are a few of the links that I looked at before hitting a wall: