What is the role of a starting system in gas turbines?

The role of a starting system in gas turbines is to provide the necessary initial rotation and ignition for the engine to start running. When a gas turbine engine is at rest, it requires a means to initiate combustion and achieve the operational speeds necessary for functioning. The starting system typically involves a starter motor or other mechanisms that turn the engine's compressor and turbine components until the engine can sustain its operation through the combustion process.

Once the system is activated, it helps to create the airflow needed for combustion and allows for the fuel to be ignited, ultimately leading to the self-sustaining operation of the gas turbine. As the engine reaches its intended operational speeds, the starter can be disengaged, allowing the turbine to continue running on its own power. This is why the provision of initial rotation and ignition is critical to starting the engine successfully.