Steve
not much science really, the gurney flap deflects the airflow under the
aileron downwards slightly, which will of course push the aileron up.
Thus you should add the flap to the wing that is light to push it down a
bit.
It definitely works and is much more elegant than bits of aluminium
hanging out the back. Easier to adjust too, just add a bit more until
it's balanced.
Graham
Steven Pitt wrote:
>
>Graham
>Can you explain more about the 'gurney flap'. My Europa trigear has a heavy
>stbd wing and I have (crudely) added an aileron trim to the stbd wing (bent
>upwards). I have been meaning to look at the science of this situation - can
>you point me in the appropriate direction.
>Regards
>Steve Pitt
>
>
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