4. Blade bending moments are being measured on a research wind turbine on a day in which the wind speed at the hub height is 9.0 m/s. A wind shear results in higher wind speed of 12.0 m/s at the top of the blade tip path and lower wind speeds of 6.0 m/s at the bottom of the blade tip path. A wind direction change results in a cross-wind of 0.60 m/s. The 24 m. diameter tur- bine starts with a flap hinge angle, Bo = 0.05 radians and, at the moment that measurements of are being made, the rate of change of the flap hinge angle is %3D = 0.01 rad/s. %3D

4. Blade bending moments are being measured on a research wind turbine on a day in which the wind speed at the hub height is 9.0 m/s. A wind shear results in higher wind speed of 12.0 m/s at the top of the blade tip path and lower wind speeds of 6.0 m/s at the bottom of the blade tip path. A wind direction change results in a cross-wind of 0.60 m/s. The 24 m. diameter tur- bine starts with a flap hinge angle, Bo = 0.05 radians and, at the moment that measurements of are being made, the rate of change of the flap hinge angle is %3D = 0.01 rad/s. %3D

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.34P

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