Turboprop aircraft are a type of airplane that use a turbine engine to drive a propeller. This design combines the efficiency of jet engines with the performance of propellers, making them ideal for short to medium-haul flights. They are commonly used for regional travel and can operate from shorter runways compared to pure jet aircraft. These aircraft are known for their fuel efficiency and ability to take off and land on less developed airstrips. Popular models include the Bombardier Q400 and the ATR 72, which are widely used by regional airlines around the world.