A turbofan is a type of jet engine commonly used in commercial aircraft. It consists of a large fan at the front, which draws in air, and a series of compressors and turbines that help generate thrust. The design allows for efficient fuel use and quieter operation compared to older jet engines. Turbofans work by mixing the air that passes through the engine with the exhaust gases produced by burning fuel. This process creates a powerful thrust that propels the aircraft forward. They are essential for modern aviation, contributing to improved performance and reduced environmental impact.