Which position does the Variable Stator Vane (VSV) schedule?

The Variable Stator Vane (VSV) is an important component in gas turbine engines, as it plays a crucial role in maintaining optimal airflow through the engine, particularly at varying operating conditions. The correct answer identifies GG and CIT because these are key operational parameters in gas turbine engines.

“GG” stands for Gas Generator, which is the section of the engine that is responsible for producing the combustion gases necessary for turbine operation. The “CIT” refers to Compressor Inlet Temperature, which is vital for determining the efficiency and performance of the engine.

The VSV adjusts the angle of the stator vanes to optimize the airflow into the gas generator based on the compressor inlet temperature, ensuring that the engine operates efficiently and reliably across different speeds and loads. This dynamic scheduling allows the gas turbine to adapt to various operating conditions, providing better performance and fuel efficiency while preventing issues such as compressor stall.

In contrast, other options represent different components or operational parameters that are not directly controlled by the VSV. Understanding the relationship between the VSV, the gas generator, and the compressor inlet temperature is key for effective gas turbine operation and maintenance.