`  == Not written by a pilot ==  ``It also places the outboard rudder surfaces directly in line with the propeller wash, providing effective yaw control even as the plane's airspeed approaches zero, as during takeoff and landing.``  If you are flying, airspeed never really approaches zero, unless you are making a trivial calculus point.  When you take off, you go from x knots groundspeed to x knots airspeed.  There never is a point where your airspeed is zero unless you are falling like a rock.`