– How do jet engine turbine blades not melt?

Question

Jet engines work at a higher temperature that the melting point of Titanium Superalloy so how do they not melt?

In: 219

Answer 1

Temperature is really irrelevant here as long as you can cool off the engine with auxiliary processes. For one, these engines are coated with thermal barrier coatings. There’s also a technique, which I believe answers your question directly, “film cooling” that simply channels the cooler air to the engine surface and reduce the incoming hot air’s effect. This means that the temperate lowers down before it even touches to the surface.