In a dual axial-flow compressor system, what does the first stage turbine drive?

In a dual axial-flow compressor system, the first stage turbine is specifically designed to drive the N two compressor. This configuration often involves multiple compressors arranged in series, each contributing to the overall pressure and airflow in the engine.

The N one compressor typically operates in conjunction with the first stage turbine as well but is often driven by a separate turbine stage depending on the engine design. Therefore, it is more about the flow arrangement where the first stage turbine is effectively transferring energy to the second compressor (N two) in this setup. The dual axial-flow design reflects its efficiency and contribution to power generation as the energy from the first stage turbine enables the N two compressor to function optimally.

Additionally, components such as fuel pumps and oil pumps are usually driven by different turbine stages or systems entirely, as their operational needs differ from the compressors. Thus, the focus is on how turbines interact with the compressors, particularly how the first stage turbine's energy directly supports the N two compressor's performance.