A 3 bladed wind has a rotor diameter of 38.1 m. The blade chord is constant and equal to 1.0 m. Each blade has a non-rotating natural frequency of 1.67 Hz. In operation, rotating at 50 rpm, each blade has a natural frequency of 1.92 Hz. The pitch angle of the blade is 1.8 degrees. (The hub is sufficiently small that it can be ignored.) The turbine is operating in a wind of 8 m/s. The airfoil lift curve slope is equal to 2π. Air density is 1.225 kg/m3. If the blade has a mass of 898 kg, Using the hinge spring blade model, find the flapping angle during these conditions. How far

A 3 bladed wind has a rotor diameter of 38.1 m. The blade chord is constant and equal to 1.0 m. Each blade has a non-rotating natural frequency of 1.67 Hz. In operation, rotating at 50 rpm, each blade has a natural frequency of 1.92 Hz. The pitch angle of the blade is 1.8 degrees. (The hub is sufficiently small that it can be ignored.) The turbine is operating in a wind of 8 m/s. The airfoil lift curve slope is equal to 2π. Air density is 1.225 kg/m3. If the blade has a mass of 898 kg, Using the hinge spring blade model, find the flapping angle during these conditions. How far