Why doesn't a jet engine melt?

Answer 1

Good question! Believe it or not the temperatures inside a jet engine do get hot enough in some parts to actually "soften" the interior components. However, engineers have come up with a clever way to keep parts cool. Many of the components including turbine blades have many tiny hols in them which cool air is directed into the part and out of the hols creating a blanket of cooler air which protects the parts from the higher temperatures flowing around it. Even though these parts are still hot enough to glow red, they are still kept just cool enough to withstand the great forces acting on them.