As the Concorde cruises at supersonic speeds, wind friction causes the outer surfaces of the airplane to heat up.
Pilots constantly monitor the airframe temperature with a probe located at the tip of the nose.
The Concorde has four jet engines that propel it to supersonic speeds. But these engines produce more than just power. They are LOUD, making the Concorde the noisiest passenger-carrying airplane ever built. But fuel isn't just for flying. It's also used to balance the plane.