What is the function of stator blades in a turbine or rotor system?

What is the function of stator blades in a turbine or rotor system?

• A. They supply lift by flapping
• B. Stationary blades that convert velocity into pressure
• C. Rotating blades that add velocity
• D. They control the yaw

Answer: (B)

Stator blades are fixed vanes that guide and condition the flow before it reaches the moving rotor. Their job is to turn and straighten the incoming flow and, in the process, convert some of the flow’s velocity into pressure. This setup reduces swirl and sets the flow angle so the rotor blades can extract energy efficiently. Because they are stationary, they don’t flap or rotate, and they aren’t involved in yaw control. That’s why the description of stationary blades that convert velocity into pressure is the best match.

Stator blades are fixed vanes that guide and condition the flow before it reaches the moving rotor. Their job is to turn and straighten the incoming flow and, in the process, convert some of the flow’s velocity into pressure. This setup reduces swirl and sets the flow angle so the rotor blades can extract energy efficiently. Because they are stationary, they don’t flap or rotate, and they aren’t involved in yaw control. That’s why the description of stationary blades that convert velocity into pressure is the best match.