The choice between two engine giants powers the world's largest passenger aircraft, but which one comes out on top?

When you're at an airport and see propeller aircraft, you likely think it is powered by a piston engine. This is usually true among smaller planes, like the Cessa 172 Skyhawk and the Piper Archer, or ...

The GE90 is the only engine option for the 777-300ER due to a series of factors driven by requirements, costs, and timetables ...

Just as with the automotive industry, there are a variety of aircraft engines designed to run on various types of fuels. Even electric planes are something we're likely to see more of in the future.