To provide the loads to structurally design the turbine, you are required to find the maximum rotor thrust for the Vestas V90 3.0 under two possible extreme conditions: (a) at the shoulder of the power curve when the turbine is operating at rated power and (b) when the blades are stationary at the shutdown wind speed of 25 m/s. Part (a) is easy but Part (b) is not as wind turbine manufacturers do not usually release details of the blades, such as their force characteristics.