What is the primary function of a starter system in a gas turbine?

The primary function of a starter system in a gas turbine is to initiate the engine's operation. This system is crucial for beginning the combustion process within the turbine. It provides the necessary initial rotation of the engine to reach the speed required for fuel ignition and combustion to occur, allowing the engine to run autonomously thereafter.

During the start-up phase, the starter system usually engages with the turbine's rotor to create initial momentum. This helps in overcoming inertial resistance and brings the engine up to its operational speed. Once the engine reaches a certain threshold, the starter can disengage, allowing the gas turbine to operate independently.

In contrast, cooling the engine during operation, monitoring engine performance, and maintaining fuel efficiency are functions that pertain to the engine's ongoing operation and management, rather than its initial start-up process.