Boom expects the airlines to be profitable at about $5,000 USD a seat, which of course is a high price tag, and the company ...

A US company's prototype jet has broken the sound barrier in a demonstration it hopes will pave the way for a successor to the Concorde ... it reached an altitude of 35,000ft before accelerating ...

Tuesday’s XB-1 flight marks the first human-piloted civil supersonic flight since Concorde’s retirement ... scale demonstrator aircraft reached an altitude of 35,290 feet before accelerating ...