Hi
Anything in the airstream is there to increase/decrease drag. IMO. I am assuming it is not planted on the rudder for correction of lack of authority in high AoA, a follow on to distribute load at the lowest attach, etc. it resembles nothing more than the exact opposite of a vortex generator, whose function is to annoy the slipstream...Cessna has had problems with low Rudder damage at the flange torque tube join...(rib)
Last edited by Lyman; 27th May 2012 at 11:29.