Another remnant from ADV’s seafaring days are the vortex generators, located along the upper leading edge of the wing and just in front of the rudder on the vertical stabilizer. By creating a turbulent flow of air just along the surface, they cause the flow to stick to said surface for longer than it normally would, enhancing its aerodynamic properties (at the expense of increased drag). On a seaplane they counter the various pitch and roll moments created by the floats (located well below the CG); on a landplane, they translate into reduced take-off and landing rolls, a lower stall speed and better stall response – and generally improved handling at high Angles of Attack (during low speed and/or high weight situations).

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