An indoor testing range to measure the aerodynamic performance of golf balls

In flight, a golf ball experiences lift and drag forces, where its lift is derived from its spin by the Magnus effect and its drag is caused in large part by the formation of a wake with a significant momentum deficit. As the ball moves along its trajectory, its spin rate decreases with time, which affects the lift and the drag. The aerodynamic characteristics of the ball must be known precisely in order to predict the trajectory accurately. Specifically, we need to know how the lift and drag coefficients, and the spin rate decay, depend on the spin rate and the Reynolds number.