Turboprop
Not to be confused with propfan. GE T64 propeller at left, gearbox with accessories in the middle, turbine core at right A turboprop engine is a turbine engine that drives an aircraft propeller. [1] In its simplest form a turboprop consists of an intake, compressor, combustor, turbine, and a propelling nozzle. Air is drawn into the intake and compressed by the compressor. Fuel is then added to the compressed air in the combustor, where the fuel-air mixture then combusts. The hot combustion gases expand through the turbine. Some of the power generated by the turbine is used to drive the compressor. The rest is transmitted through the reduction gearing to the propeller. Further expansion of the gases occurs in the propelling nozzle, where the gases exhaust to atmospheric pressure. The propelling nozzle provides a relatively small proportion of the thrust generated by a turboprop. In contrast to a turbojet, the engine's exhaust gases do not generally contain enough energy to create s...