The Ridiculous Engineering of Jet Engines

How does a jet engine not melt? Sponsored by KiwiCo - Use code VERITASIUM to get 50% off your first monthly KiwiCo Crate! https://www.kiwico.com/VERITASIUM Want to start your own crystal garden? https://www.kiwico.com/crystalchemistry Our friends at Science Alert are doing a sweepstakes where you can win a 5-day space themed vacation for two. The itinerary includes a trip to the Kennedy Space Center in Florida for astronaut training and a meet and greet with a NASA astronaut. If you’d like to be entered in the draw, just subscribe to their free science newsletter Spark. No purchase necessary. Open to US residents only. Enter here: https://www.sciencealert.com/spark-into-space-comp?utm_source=veritasium We have a tabletop game launching! Check it out here! - https://ve42.co/kickstarterdje If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter ▀▀▀ 0:00 How a jet engine works 3:18 Why are jet engines so big? 5:17 The Inside of a Jet Engine 8:49 Edge Dislocation 11:11 The First Jet Engine 12:48 Inside the Rolls-Royce Precision Casting Facility 17:07 Nickel Superalloys - Gamma Prime 23:58 Crystal Structure 25:38 Making a Turbine Blade 32:22 Why don’t turbine blades melt? 35:30 Throwing Sand Into a Jet Engine ▀▀▀ A big thanks to Ben Todd, James Banks, Ben Fifoot, Doug Smith, Stefan Wagner, Rumaanah Hoosen and the rest of the team at Rolls-Royce. A huge thanks also to Professor Howard Stone and Dr George Wise from the University of Cambridge. We’re also incredibly grateful to Professor Jaafar A. El-Awady, Dr Karen A Thole, Professor Cathie Rae, Professor Paul Withey, Professor Pedro Patrício, Professor José Tavares and Ryan Moreman for their time and expertise. Thanks to Institute for Materials, Ruhr University Bochum, SFB Transregio 103 for the animation showing the microstru