The APU, or auxiliary power unit aboard an aircraft has a specific purpose, but also a pretty big drawback. Here's what you ...

“You will hear the noise whenever there is a differential pressure in the hydraulic systems, usually if the aircraft is starting up an engine or operating on one engine,” says Kierna ...

Airplanes obviously employ very different engine technology compared to ground vehicles, but some actually do use a form of ...

Explores Boom Supersonic's claim of achieving “Boomless Cruise” and what it means for the future of supersonic flight.