Talk with Boermanns as he and his pals are the gurus. What you're most likely to get is the hope for re-laminatization after a trip to turbulent. Rough equation is Re_x 100 for even the hope to get this action in a proverse gradient. X is a step or gap or roughness element or even waviness perhaps..

Some nice color flowvis you've probably seen out of the Akafliegs as well, but even there with no seams and proverse gradient, the flow trips to turbulent about 30-40% of the canopy highlight and moves aft from there as you get to the seams. Will also be function of the pressure field around the wing root since that is now a boundary condition for the canopy.

Yaw string definitely trips to turbulent, but we need those.

Under pressure or suction at the seam due to an extractor? If you could get suction on the whole canopy surface then yes, but if it's only at the canopy gap then no because youre still bounded and hoping for re-laminarization, or at best the calibrated amount of suction at the seam, the flow would still see a perfect wall and thus you're back into the proverse gradient question of the canopy/fuse as a whole.

Then you'll get the argument for total drag vs speed and how much comes from what part of the glider. Wing, fuse, tail. Canopy drag is combined in total fuse drag of course.


Good question to ask and will make people think.
Britton