A turboprop engine is a type of aircraft engine that uses a gas turbine to drive a propeller. It combines the features of a jet engine and a propeller, making it efficient for short to medium-haul flights. The engine generates thrust by spinning the propeller, which is connected to the turbine, allowing for better fuel efficiency at lower speeds compared to pure jet engines. Turboprop engines are commonly found in regional and commuter aircraft, such as the Bombardier Q400 and ATR 72. They are particularly effective for flying shorter distances and can operate from shorter runways, making them ideal for accessing smaller airports.