What does MFC use for VSV actuation?

The correct answer is that MFC (Master Fuel Control) uses GG (Gas Generator) and CIT (Control Injection Turbine) for VSV (Variable Stator Vane) actuation. In gas turbine engines, the MFC is responsible for regulating fuel flow, which is critical for efficient operation of the engine.

The Gas Generator (GG) provides the necessary pressure and flow conditions needed for the actuation process. The Control Injection Turbine (CIT) complements this by ensuring that the right amount of fuel is injected based on the required power settings and operational conditions. Together, they work in coordination to optimize the engine performance, particularly during varying levels of load and speed.

This interaction is essential for maintaining the proper angle of the variable stator vanes, which are crucial for performance, efficiency, and stability across different operational regimes. These elements reflect the integration and complexity of modern gas turbine control systems, which are designed to ensure safe and efficient engine operation.

Understanding the roles of these components assists in troubleshooting and optimizing performance within gas turbine systems.