The GE9X is set to be the biggest jet engine in history. It’s wider than the fuselage of a Boeing 737, or as GE puts it, it’s “so large that Shaquille O’Neal would fit inside it with Kobe Bryant sitting on his shoulders.” The GE9X features the largest fan ever produced, a full 11 feet in diameter. It’s also the quietest, most fuel-efficient, the lowest-emission jet engine from General Electric ever. It will deliver 10% less fuel burn than current models, and a 5% cut in fuel use vs. any twin-aisle engine. … More GE9X Engine: Boeing 777-9