As I read this about a trim tab on a CL wing, I often wonder if a Trim Tab on a fixed wing acts like a control tab on an aileron, or an actual trim tab for the whole wing.
Let's say tab is in the UP position, does the "trim tab" actually force the wing lower or does it try to increase that wing into a higher angle of attack creating more lift and flying the wing up? That is how elevator-aileron trim tabs work on conventional un-powered control surfaces. The tab moves opposite to the control position so as to fly the surface into the position to releave stick pressure for the pilot.
Without a control surface, I just wonder about that.
This model's wings looks like props with so much warps. However with trim tabs and some not shown, it flies very well on RC. Just wonder if CL would be the same or opposite!