From piston engines to future hydrogen fuel celled engines, the history of aero engines is full of revolutions.

Delta Air Lines said it is replacing auxiliary power units (APUs), a type of engine, on its Airbus aircraft to address toxic fume incidents that can harm airline crew and passengers. The airline ...

If you've ever stood near a runway and watched planes take to the skies, you've probably also been awestruck by the sheer size of the engines that make it all possible. On large commercial planes, ...