Slingsby T67 aileron thingy?
Gizajob
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Slingsby T67 aileron thingy?
Just got a T67 MkII in our club. Taking a look round it and see that both ailerons and one side of the elevator (side without the trim tab) have odd 'plates' on the trailing edge of the surface.
The 'plates' are normal to the airflow and extend for about half the span of the ailerons, on the inboard end. They extend above and below the surface by around 6mm.
Does anyone have any idea what they do?
The 'plates' are normal to the airflow and extend for about half the span of the ailerons, on the inboard end. They extend above and below the surface by around 6mm.
Does anyone have any idea what they do?
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Not sure that it is - would you not balance the control closer to or ahead of the hinge line?
Maybe it's some kind of repair?
They`re "tabs" to give some more feedback to the controls, ie feel, and make them "stiffer". For an authoritative chat, ring Sby., and ask to speak to their flight test engineer, I think it`s John Poole, and they`d be happy to explain.Later a/c have modified "spades" as well.
Gizajob
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Cheers for that Sycamore! Don't suppose you can explain how they improve feel? I guessed maybe at large deflection/ AoA they would provoke a vortex or something?... If I get hold of the Slingsby guru, I'll post what he says.
Pull-up a palm tree, bring a bucket of sand, and a box of dates and we`ll begin!
In the old days,when................................., one used to roll up a piece of cord and tape it on top or underneath a control surface to act as a trim-tab, cutting the tape length to suit the balance you wanted, ie aileron requires constant pull force to hold wings level, add/subtract some tab. So, you can also do the same to both sides to stiffen it up if the control harmonisation needs improving.Some a/c have very blunt trailing edges for the same reason.
In the old days,when................................., one used to roll up a piece of cord and tape it on top or underneath a control surface to act as a trim-tab, cutting the tape length to suit the balance you wanted, ie aileron requires constant pull force to hold wings level, add/subtract some tab. So, you can also do the same to both sides to stiffen it up if the control harmonisation needs improving.Some a/c have very blunt trailing edges for the same reason.
They'd add more drag, giving a larger moment about the hinge line than would otherwise be there. Since the pilot is the one opposing this moment then the controls would feel 'heavier'.
Analogous to the change in feel from low speed to higher speed.
Analogous to the change in feel from low speed to higher speed.
