The first type jet engine was a turbojet that went into production in 1939, finding a home on the German Me 262, making it the first fighter jet to fly during WWII.

Although turbojet and turbofan jet engines are similar, the things that set them apart make them very different. Here's what you need to know.

Pratt & whitney developed the 4,500-kilogram (10,000-pound) thrust JT3 turbojet engine in 1950. It powered such military aircraft as the Boeing B-52, Convair F-102, Douglas A3D, Lockheed U-2, ...