A turboprop engine is a turbine engine that drives an aircraft propeller. In contrast to a                        , the engine's exhaust gases do not contain enough energy to create significant thrust, since almost all of the engine's power is used to drive the propeller.

Turboprop engine is used for planes which have a cruising speed between 300 and 800 km/h, because over this, the jet velocity of the propeller and the exhaust is relatively low.
Because of their high price turboprop engines are mostly used where high-performance short-takeoff and landing capability and efficiency at modest flight speeds are required.

 

 

 

 

 

 

 

 

 

 

 

 

 

In the simplest form a turboprop the air is drawn into the intake and compressed by the compressor. Fuel is then added to the compressed air in the combustion chamber, 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.

 

 

For example the Airbus A400M is powered by four “Europrop TP400 engines”,