The Concorde supersonic jet revolutionized air travel but was unsuccessful in terms of longevity due to high operating costs and a noisy operation, so the NASA X-Plane has been created to help change this.
Presently in the early stages of development, the supersonic jet would create a "low boom" experience, which means it wouldn't cause an explosive sound when reaching it's cruising altitude. This would make it more applicable for continental travel as it wouldn't cause undue noise pollution in urban areas and make it possible for passengers to travel at speeds far quicker than existing air travel.
The contract for the Quiet Supersonic Transport (QueSST) NASA X-Plane has been given to Lockheed Martin and could revolutionize air travel by enabling ultra-quiet, supersonic speeds.
Ultra-Quiet Supersonic Jets
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