What is the major function of the turbine assembly in a turbojet engine?

What is the major function of the turbine assembly in a turbojet engine?

• A. Creates thrust directly
• B. Supplies power to the compressor
• C. Coolant flow
• D. Ignites fuel

Answer: (B)

The turbine assembly is there to extract energy from the hot exhaust gases and convert part of that energy into mechanical work to drive the compressor (and any attached accessories) via a shaft. This keeps the compressor turning so air can be compressed, mixed with fuel, and burned to sustain the cycle. Thrust isn’t produced directly by the turbine; it comes from the high-velocity exhaust after expansion through the nozzle. The turbine also isn’t responsible for cooling flow or ignition of fuel. So the turbine’s primary role is supplying power to the compressor.

The turbine assembly is there to extract energy from the hot exhaust gases and convert part of that energy into mechanical work to drive the compressor (and any attached accessories) via a shaft. This keeps the compressor turning so air can be compressed, mixed with fuel, and burned to sustain the cycle. Thrust isn’t produced directly by the turbine; it comes from the high-velocity exhaust after expansion through the nozzle. The turbine also isn’t responsible for cooling flow or ignition of fuel. So the turbine’s primary role is supplying power to the compressor.