In a turboprop engine, most of the energy in the exhaust gases is converted into what?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

In a turboprop engine, most of the energy in the exhaust gases is converted into what?

Explanation:
In a turboprop, the hot exhaust gases pass through a turbine that extracts energy from the gas flow to drive the propeller via a reduction gear. The majority of the energy in those exhaust gases is converted into mechanical energy (shaft power) to turn the propeller, rather than being used to produce ignition energy or electrical energy, and certainly not into wing lift. Some energy remains as a small amount of jet thrust from the exhaust, but the main purpose of the turbine is to provide shaft horsepower to drive the propeller.

In a turboprop, the hot exhaust gases pass through a turbine that extracts energy from the gas flow to drive the propeller via a reduction gear. The majority of the energy in those exhaust gases is converted into mechanical energy (shaft power) to turn the propeller, rather than being used to produce ignition energy or electrical energy, and certainly not into wing lift. Some energy remains as a small amount of jet thrust from the exhaust, but the main purpose of the turbine is to provide shaft horsepower to drive the propeller.

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