As I understand it, supersonic aircraft makes 2 major shockwaves, one at the front, and one at the back. If those 2 points are close together, they are experien

As I understand it, supersonic aircraft makes 2 major shockwaves, one at the front, and one at the back. If those 2 points are close together, they are experienced from the ground as a loud crack. Since they are farther apart in the x-59, the idea is they will be more of a thump. Also, since the cone is so slender, the initial shockwave is a lot gentler, and every leading edge on the aircraft is gradual for the same reason. Another development that this has, is the bottom is very smooth, with parts like the air intake moved to the top. This makes it quieter from below. If you look up "x-59 wind tunnel" you will see a lot more shock waves on the top than the bottom. If you look close, the engine also has a shroud under the nozzle for the same reason.