How does the starter system influence the initial phase of a gas turbine's function?

The starter system plays a crucial role in the initial phase of a gas turbine's operation by initiating rotor movement. When starting a gas turbine, it is essential to bring the rotor up to a sufficient speed to enable the combustion process and the airflow required for the engine to sustain operation. The starter typically engages with the turbine during this phase to provide mechanical energy, which revolves the shaft and creates a low-pressure area at the compressor inlet, allowing air to flow into the combustion chamber.

While ignition for combustion, generating electrical power, and monitoring fuel supply are important functions in the overall operation of a gas turbine, they occur after the rotor has been started. Without the starter system effectively initiating rotor movement, the gas turbine could not transition into the combustion phase, making it a vital component for the successful startup of the engine.