I am about to fly a plane that has a outboard augmentation roll spoiler on each side of the wing that also doubles as a flight spoiler. When the left aileron moves up the spoiler on the left side of the wing moves with it. At this time the aileron on the right side moves down as normal and the spoilers on the right side remain flush. This movement is exact and mirrored when in a right hand turn.
When closed the outer spoiler moves with the aileron minimally, at full aileron spoiler raises about 3/16 off a inch. The spoiler moves at the same time as the aileron. Some real aircraft have a delay in the spoiler movement while others do not. Position of the spoiler panel in relation to the center of lift and and relation and distance between itself and the aileron all are critical I'm sure to it's effectiveness and aerodynamic behavior. Obviously this entire project is experimental as I do not have a wind tunnel or tecnical info, which by the way Boeing will not give out to anyone, concerning the arrangement of how all this works.
So , here is my question. Has anyone ever built a wing using a device like this and have any info as to it's effect or characteristics. I don't mind the theorectical imput, but what I'm looking for is the actual experiance and conclusions that someone came to while using such a device in actual model practice. My biggest concern is the seperation of the boundary layer as the spoiler rises which can cause a great loss of lift resulting in excessive roll rate with obvious results. Dean