The world’s largest jet engine, built by GE Aviation for Boeing’s next generation wide body passenger jet, made its first test flight last week.
The GE9X is a monster compared to its predecessors. Due to the extensive use of composites in building the fan blades and the fan case, 3D-printed nozzles, new light- and heat-resistant ceramics, and reducing the number of fan blades from 22 to 16, GE was able to lighten the engine and expand its size so that its fan is now 134-inches (341 cm) across and the entire engine is as wide as a Boeing 737 fuselage. In addition, it can push 100,000 lb of thrust and is 10 percent more efficient than the GE90 engine used on the current generation of 777s.
The engine was attached to a 747 test plane for the flight, and the images at the link truly illustrate how large this engine is. The 747 still had its two outer normal engines attached, and the size difference is gob-smacking. When I first looked at the pictures I was convinced it was fake and that they had photoshopped this giant engine onto the 747. They didn’t.