What happens if you throw sand into a jet engine?

Ever wonder how a jet engine survives 1,500 °C blasts without turning into a puddle of metal? This Veritasium deep-dive breaks down everything from basic airflow and giant fans to the hidden world of edge dislocations and single-crystal nickel superalloys that keep turbine blades intact. You’ll see how Rolls-Royce casts and polishes those blades in ultra-clean facilities, and why careful crystal engineering is the secret sauce behind super-hot, super-strong parts.

But what about that sandstorm you flew through? We get to the gritty finale—literally—by chucking sand into a spinning engine to show how abrasive particles can erode coatings, clog cooling channels, and threaten blade integrity. It’s a wild ride through materials science, history and real-world testing that proves jet engines are marvels of design… until you feed them grit.

Watch on YouTube