I have read about this. They hope to create a time delayed sonic boom by having the phase of the boom progressively delayed as it is created along the fuselage

I have read about this. They hope to create a time delayed sonic boom by having the phase of the boom progressively delayed as it is created along the fuselage - this will help with some cancellation as well as delaying the waves path so they arrive spread out in time = thump of delayed arrival versus a crack of 'time on target' wave arrival. Nasa site https://www.nasa.gov/specials/X59/ https://www.nasa.gov/specials/X59/ Economics ?? Pushing large things faster than sound is energy intensive. Earthonomics - Hydrogen would help