Concorde flew at the cruising speed of Mach 2, twice the speed of sound, where even small increases in drag would have had a significant impact on fuel burn and range. A wider cross-section would have ...

After more than two decades since the iconic Concorde was retired, supersonic passenger travel is poised for a comeback.

The Concorde, the iconic supersonic passenger jet, remains one of the most impressive feats in aviation history. Flying at twice the speed of sound (Mach 2), the Concorde could cross the Atlantic in ...

The tunnel would stretch 3,400 miles under the Atlantic Ocean, which in some places is thousands of metres deep.