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Nov30-08, 02:46 AM
HW Helper
P: 7,173
Quote Quote by JT673 View Post
The whole turbine spins counterclockwise. How is torque being done on the turbine if there's no net force done in the horizontal direction?
The air is being accelerated clockwise via interaction with the turbine blades, and reacts to this clockwise acceleration with a counter-clockwise torque on the turbine. Eventually the turbines rate of rotation reduces the effective angle of attack and clockwise acceleration of air, reducing the torque until all torques cancel, and the rate of rotation stabilizes.