On Jan. 27, the XB-1 aircraft, the brainchild of Blake Scholl's company Boom Supersonic, is expected to break the sound barrier.

The countdown has begun for the XB-1’s “historic” first supersonic test flight that should break the sound barrier, according ...

That is, unless a new design could dispense with the sonic boom. Enter NASA’s latest—and ... nest of sorts directly behind the wing, and no fewer than three additional horizontal lifting ...