Propfan

Alright kiddo, propfan is like an airplane engine that uses big, flat blades to push air backwards and make the plane go forward. But instead of having just a few big blades like most airplane engines, propfan engines have a bunch of smaller blades arranged in a special way.

This special arrangement helps the engine use less fuel and make less noise than regular engines. Plus, it can make the plane go faster! It's kind of like riding a bike with your hands close together on the handlebars, instead of spread far apart.

So next time you see a plane with weird-looking propellers, remember that it's a propfan engine helping it fly faster and more efficiently!