Which component does the turbine section primarily power in a turbojet engine?

Which component does the turbine section primarily power in a turbojet engine?

• A. The fuel pump
• B. The compressor section
• C. The exhaust nozzle
• D. The thrust reverser

Answer: (B)

The turbine’s main job is to convert part of the hot gas energy into mechanical work to drive the compressor. The compressor needs a lot of power to raise the incoming air pressure to the level required for efficient combustion, so the turbine is coupled to the compressor via a shaft and spins it to supply that energy. The exhaust nozzle and thrust reverser are involved in thrust generation and aircraft braking, not in powering the compressor. The fuel pump and other accessories are driven by the engine’s accessory gearbox, which takes its drive from the same turbine shaft, but the primary load the turbine must handle is boosting the compressor’s speed and pressure.

The turbine’s main job is to convert part of the hot gas energy into mechanical work to drive the compressor. The compressor needs a lot of power to raise the incoming air pressure to the level required for efficient combustion, so the turbine is coupled to the compressor via a shaft and spins it to supply that energy. The exhaust nozzle and thrust reverser are involved in thrust generation and aircraft braking, not in powering the compressor. The fuel pump and other accessories are driven by the engine’s accessory gearbox, which takes its drive from the same turbine shaft, but the primary load the turbine must handle is boosting the compressor’s speed and pressure.