"Airbus said the plane would be targeted mainly at business travel and VIP passengers 'who require transcontinental return journeys within one day,' and at the military."
"[…] the supersonic plane could carry 20 passengers or two to three tonnes and reach up to 4.5 times the speed of sound (Mach 4.5) — around 5,500 kilometres per hour."
"[…] its main improvement […] is that it reduces the noise of the sonic boom — a loud bang caused by shockwaves created by an object moving faster than the speed of sound."
Airbus patents supersonic plane that could hit Mach 4.5
A supersonic rocket-plane that could theoretically fly from New York to London in an hour has been patented by Airbus.