A 2 m diameter satellite dish, with porosity of 0% is shaped as a porous parabolic dish, . It is used in Antarctica where the highest recorded wind speed is 327 km/hr. When winds higher than 100 km/hr are detected, the dish is automatically rotated to face away from the wind. It is mounted on a pole which is 1.7 m long, to the centre of pressure. (The drag force acts through the centre of pressure) Determine the maximum bending stress, during the storm, at the base of the pole due to the drag force. The pole is solid, with a diameter of 60 mm. At -40 degrees C, the viscosity of air is 1.5E-5 N.s/m^2 and density is 1.52 kg/m^3.
A 2 m diameter satellite dish, with porosity of 0% is shaped as a porous parabolic dish, . It is used in Antarctica where the highest recorded wind speed is 327 km/hr. When winds higher than 100 km/hr are detected, the dish is automatically rotated to face away from the wind. It is mounted on a pole which is 1.7 m long, to the centre of pressure. (The drag force acts through the centre of pressure) Determine the maximum bending stress, during the storm, at the base of the pole due to the drag force. The pole is solid, with a diameter of 60 mm. At -40 degrees C, the viscosity of air is 1.5E-5 N.s/m^2 and density is 1.52 kg/m^3.
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.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.50P
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