How a Jet Engine Actually Works — And Why It Almost Never Fails

A jet engine sets fire to a hurricane of air thousands of times a second, runs hotter than the metal it's built from, and will do it for years without stopping — and almost no passenger has any idea what's happening a few feet from their window. This is how it really works, and why it's one of the most reliable machines ever built. If you've ever wondered how a jet engine works, why planes don't fall when an engine fails, or what that roar on takeoff actually is — and if engine noise makes you nervous — this will change how you fly. What's the one part of flying that still makes you uneasy? Tell me in the comments — it might be the next video.