Why do I hear an unusual noise when the wind speed nears 50 mph (22 m/s)?
When the aeroelastic blades twist due to high wind conditions, the unit is stalling itself to protect itself. The noise is normal and protects the unit in high wind conditions. If the noise is undesirable, stop the wind generator by shorting the turbine wires or through the use of a toggle (start/stop) switch.
