u/samtheman71313131

hi, as the title says im doing an internship at my local university and they let me test their wind tunnel. i was alone during this so i couldn't ask if what i was doing was right. but the main thing that i felt was wrong is in the lift/multi wing/high angle where it jumps up then back down then back up. i used a 3D wing, 2D wing, flap wing. low angle means that the flap was pointed downward and high angle means it was pointed upward. the wind tunnel had a limit of 29N for lift which is why in the low angle one it flattens really fast. again this is my first time and i have no idea what im doing.

other thing was the drag with the 3D wing where it jumped, could it be because of the air flow stalling?