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Veritasium: Why Don’t Jet Engines Melt?

Ever wondered how jet engines blast through scorching air without melting? This video unpacks the basics of how a jet engine works, why they need to be so big, and walks you inside both the history-making first jet engine and the ultra-high-tech Rolls-Royce precision casting facility.

Down at the material level, it’s all about nickel superalloys and crystal engineering: gamma-prime particles block edge dislocations, single-crystal blades avoid nasty grain boundaries, and clever cooling channels keep temperatures in check—even while we toss sand at them!

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