Exam Question

The force acting normal to the centerine plane of a roulder is given by the expression: Fn = 15.5 Av2∝ newtons.

(drawing will be here soon)

Calculate EACH of the following:

(a) The diameter of the radder stock required for a maximum allowable stress of 77 MN/m2

(b) The drag component of the rudder force when the rudder is put hard over at full speed.