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Control surface interference (aerodynamic)

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T

Tinbuzzard

My one-off project, the tinbuzzard, has a wing with fairly large flaps and small ailerons. (spanwise) Because of this, I have planned for spoilers to augment roll control at lower speeds. I'm worried about possible flow interactions between the deflected spoiler and its adjacent aileron. The spoiler is a slot lip type located in front of the outboard part of the conventional single slotted flap. As now planned, the outboard end of the spoiler panel lines up with the split between the flap and aileron. Should I leave a space of a few inches between the spoiler end and this point? Maybe a upper surface fence?

The ailerons are 28% chord top hinged covering about 26% of the semi span. Both aileron and flap have a trailing edge angle of 17 deg. The spoilers have a slot that will be exposed along their base when deflected.(hinge point in front of the spoiler L.E.)

Thanks to all of the slide rule jockeys out there!

Jeff
 
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