Which set of components are considered the power section in a turboprop engine?

• A. Compressor, Combustion chamber, Turbine, Exhaust
• B. Inlet duct and Exhaust
• C. Propeller and Gearbox
• D. Inlet duct and Turbine

Answer: (A)

In a turboprop, the power section is the part of the engine that actually converts chemical energy into shaft horsepower to drive the propeller. The compressor and combustion chamber work together to create high-energy, high-pressure gas, and the turbine extracts energy from that gas to turn the geartrain that ultimately powers the propeller. The exhaust paths the spent gases away after energy has been extracted. Together, these components form the core energy conversion and delivery path to the propeller, which is why they’re lumped as the power section. The other options point to merely the air intake and exhaust, or to the output mechanism itself, rather than the energy-generation and extraction stages.