Many sites on the internet suggest that the effect caused by the surface is scalable. We did a study to test that hypothesis. We created several wings of various sizes and span, but the same profile. The profile we chose as a starting point was the Clark Y.
We tested all shapes at 60 mph, so Re was not consistent.
Each foil was tested at span/10, span/4, span/2 and span.
Each foil was tested at 4 angles of attach. 0°, 2°, 5°, and 8°