But Concorde was designed to cruise at twice the speed of sound, or 1,350 mph (2,170 km/h). To do that, it required four Olympus jet engines, each capable of a continuous 28,000 lbs of thrust, or ...

The Rolls-Royce Olympus engine was listed for £748,000 in 2019 (or $975,0000.) It is also the only Concorde engine sold by British Airways that still had the afterburner fitted.

Blown Tire May Be Behind Concorde Engine Fire L.A. Times Archives July 29, 2000 12 AM PT From Associated Press ...

Concorde's afterburner is turned off 30 seconds after takeoff, before it heads towards a cruising altitude of 60,000 ft and a top speed of 1,345 mph, or twice the speed of sound.