Flow separation
I am just an ordinary pilot but I am sure you guys (and gals) accept honest questions.
Also, I am not sure if this question follows on from this thread but here goes. Given that vortex generators are meant to reduce stalling speed and VMCA (presumably by re energising the flow) what do you think of a Seneca that appears to have an earlier flow breakaway i.e. onset of buffet 20 kts before the clean stall and similiar with flap. And this aircraft does have vortex generators fitted. The stall speed appears to be 5 kts higher clean but about the same with 25 degrees flap compared to a non vortex fitted aircraft.
I am beginning to think they must have fitted them the wrong way round.
Incidentally, Seneca's with badly fitting doors are believed to cause buffet on the tailplane but who knows for sure without seeing the vortices.