Double Fanblade

Your fly decides to move to your fancy double fan. (modeled below) The fanblades are 1.5 ft each and the distance from the the center of the middle of the appliance to the middle of each smaller fan is 3 ft. The whole thing is rotating at one rotation a second and the small fans are rotating at 3 rotations a second.[br][br]Create an equation to model the fan. [br]What is the max height above the horizontal that the fly will be.

Information: Double Fanblade