NASA recently fired up the X59 supersonic jet, developed with Lockheed Martin, with tests conducted between October and February.
The X59 generates a sonic thump instead of a sonic boom, reducing ground noise.
Exceeding the speed of sound creates a loud crack called a sonic boom, which can startle people and cause damage.
Concorde was discontinued in 2003 due to noise complaints and inefficiencies.
The X59 addresses noise issues by mounting the engine on top of the aircraft.
The X59 will fly at 55,000 feet and reach a top speed of 1,489km/h.
The X59 will undergo tests to understand the impact of sonic thumps on the ground, scheduled through 2027.
Boom Supersonic is also working on commercial supersonic jets, with their XB-1 aircraft achieving Mach 1 speeds.
