TL;DR

Derek Muller takes you inside a jet engine—from its basic airflow and massive size to the precision casting of single-crystal nickel superalloy turbine blades—showing how clever crystal structure, cooling channels and superalloys keep them from melting even under 2,000 °C exhaust. After exploring engine history, metallurgy and manufacturing at Rolls-Royce, he wraps up with a fun (and gritty) demo: what really happens when you hurl sand into a running jet engine.

Along the way, you’ll pick up insights on edge dislocations, gamma-prime strengthening, grain selection and why those high-tech blades are the unsung heroes of flight.

Watch on YouTube