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A turboprop engine is similar to a jet engine in that both use post-combustion gasses to drive a turbine that operates the compressor used to compress the intake (pre-combustion) gas (air) before it reaches the combustion chamber where it is mixed with fuel and is then burned.

The difference is that a jet engine uses a very small turbine device sufficient to run only the compressor. The remainder of the greatly expanded gasses eject as a high thrust exhaust that forces the airplane forward. The turboprop engine, on the other hand, uses a much larger turbine that not only runs the compressor, but also turns a propeller which pulls the airplane forward.

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14y ago

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