The rudder of a boat can be considered a rectangular wing with a symmetric profile. The chord length,c, of the rudder, is 0.21m. The rudder is mounted on a pivot with the axis of rotation at 3cm from the leading edge. When the rudder is deflected, the lift coefficient is 0.5. The Center of Pressure is located at 0.36c. what is the coefficient of moment acting at the pivot? (note a positive moment coefficient tends to increase the angle of attack)

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To calculate the coefficient of moment Cm acting at the pivot of the rudder you ... View the full answer