What is the primary purpose of the turbine section in a jet engine?

The primary purpose of the turbine section in a jet engine is to drive the compressor section. In a turbine engine, during the combustion process, high-temperature and high-pressure gases are produced, which flow through the turbine. The turbine extracts energy from these gases, which is then used to turn the compressor. This is a critical function because the compressor is essential for compressing the incoming air before it enters the combustion chamber, where it mixes with fuel for combustion.

This energy extraction and conversion process is central to the functioning of a jet engine, allowing for a continuous cycle of air intake, compression, combustion, and exhaust that produces thrust. The turbine section must effectively operate to maintain the overall performance and efficiency of the engine.