could you please go into a little more detail? I have observed the mid-span stall strips on PA28-161's, and have wondered about the various reasons that they might have been put in that position.
Oktas8, as I said, I lead a sheltered life so if I responded it would just be more speculation that you don't want as I know little about the Warrior's wing aerodynamics. I've found something which serves as an online whiteboard and I have a bottle of red wine here to prompt the brain but I doubt if I could answer your question well enough.
(I wouldn't use a stall strip to prevent spanwise spread of separation.)
If my whiteboard could show the real spanwise lift distribution for the Warrior wing planform then I'd be happy to continue the discussion. Have a look at
Drawing 3 here. It shows the stall patterns of 3 wings:
- constant chord - stalls first at wing root
- straight taper with outboard stall
- one something like a Warrior planform with both an inboard and outboard stall. Do you think that it could do with stall strips just inboard of mid-semispan so that it gets more of the inboard wing to stall before the tip stalls?