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Pfiiiiiiiieeeeeuuuuww BOEM!
ailerons zien er wel klein uit.
Wouter, op deze foto kan je goed zien dat de ailerons bij het orgineel ook zo smal zijn (en parallel lopen):
A very interesting flap is the "Junker" type. It is a separate small airfoil under the wing trailing edge and hinged in such a way as to always create the "funnel effect" to reactivate the upper surface boundary-layer.
The Junker flap is especially interesting when used as ailerons. As already mentioned the usual boundary layer is quite thick over the rear part of the airfoil and 'normal' ailerons need a certain minimum deflection to be effective. This is usually small "ineffective" roll control deflection from its neutral position. With the Junker type aileron, this is not the case if full advantage of the possible "funnel effect" is achieved by careful design of the hinge point location and careful construction.
The drawback of this flap is that at high speed the funnel is always consuming some energy so that the drag coefficient is slightly higher than for a conventional flap.
But the 'Junker' flap is a very good compromise when excellent low speed in aileron controllability is desired, associated with high lift/low drag in climb configuration, and the top speed end is not so important.
The 'Junker' flap always, and the 'Fowler' flap when extended, provide a certain 'boundary layer' control, be cause they 'trim" this layer out by blowing accelerated air into it, thus allowing the airflow to adhere to the solid airfoil up to substantial deflections (30 to 45 degrees) without local stalling of the airflow