> The Concorde relied on an afterburner to achieve supersonic flight, so it burned a ton of fuel. Wiki says: https://en.wikipedia.org/wiki/Supercruise https://

> The Concorde relied on an afterburner to achieve supersonic flight, so it burned a ton of fuel. Wiki says: https://en.wikipedia.org/wiki/Supercruise https://en.wikipedia.org/wiki/Supercruise > Supercruise is sustained supersonic flight of a supersonic aircraft without using afterburner. > Concorde routinely supercruised most of the way over the Atlantic Real question: How many in-production/operation engines in world can fly supersonic without afterburners? I think it is only a handful, all insanely expensive and backed with squillions of dollars of gov't/military money. And, the maintenance cycle must be out of this world expensive.