Vortex Generators / Hmmm Airtabs

[mosier]

I know it may be some trouble to try the test again, but your vortex generators might be too close to the trailing edge to be of benefit. On plane wings, the generators are closer to the front of the wing, to keep the air attached over the surface of the wing. You might want to try moving them forward a few inches, and see if there is any difference.

One thing that might be of interest is this quick doc on the generators, on the wikipedia (http://en.wikipedia.org/wiki/Vortex_generator), where it says they actually increase drag.