Which are the three types of vanes used in gas turbine engines?

Which are the three types of vanes used in gas turbine engines?

• A. Rotor vanes, stator vanes, inlet guide vanes
• B. Turbine vanes, compressor vanes, exhaust vanes
• C. Intake vanes, outlet vanes, bypass vanes
• D. Guide vanes only

Answer: (A)

The main idea is that vane types in a gas turbine are defined by where they are located and what they do for the flow. Rotor vanes are the blades that rotate with the shaft; they interact with the gas to transfer energy and drive the train of stages. Stator vanes are fixed blades placed between stages that direct the flow and convert the gas’s velocity into pressure, shaping the path as the air moves from one rotating stage to the next. Inlet guide vanes sit at the compressor intake and straighten the incoming flow, setting the proper angle for the air to enter the rotor correctly at various operating speeds. So, the three common vane types are rotor vanes, stator vanes, and inlet guide vanes. The other groupings don’t reflect this standard arrangement or omit a key type (for example, some options mix rotating and fixed components or leave out the inlet conditioning vane).

The main idea is that vane types in a gas turbine are defined by where they are located and what they do for the flow. Rotor vanes are the blades that rotate with the shaft; they interact with the gas to transfer energy and drive the train of stages. Stator vanes are fixed blades placed between stages that direct the flow and convert the gas’s velocity into pressure, shaping the path as the air moves from one rotating stage to the next. Inlet guide vanes sit at the compressor intake and straighten the incoming flow, setting the proper angle for the air to enter the rotor correctly at various operating speeds.

So, the three common vane types are rotor vanes, stator vanes, and inlet guide vanes. The other groupings don’t reflect this standard arrangement or omit a key type (for example, some options mix rotating and fixed components or leave out the inlet conditioning vane).