Why Are Airplane Engines So Big?

The physics behind the perfect size of a jet engine. Thanks to for supporting this video – if you try the free 30-day trial, I recommend “Ender’s Game“ by Orson Scott Card Thanks for everyone who supports MinutePhysics on Patreon! Link to Patreon supporters here: The answer to this question has everything to do with drag & kinetic energy vs momentum change (thrust) – ie, a bigger engine fan allows for a larger air mass to be accele