A geared turbofan is a type of aircraft engine that uses a gearbox to connect the fan to the turbine. This design allows the fan to spin at a different speed than the turbine, optimizing performance and fuel efficiency. By reducing the fan speed, the engine can produce less noise and improve overall efficiency. The geared turbofan engine is commonly used in commercial aviation, providing significant benefits over traditional turbofan engines. It enhances fuel economy, reduces emissions, and lowers noise levels, making it an attractive option for airlines and manufacturers looking to meet environmental regulations and improve operational costs.