Errr... is that Invisible wall on the other end a one-way thing or am i doing it wrong?

Fun to try: takeoff through it...
An-22: doesn't takeoff in time even with full flaps. The sound of it running at 100% power makes the ground vibrate
An-10A (Herc look-alike with 120 passenger seats): 1st time too much flaps, so too high. 2nd time too much to the right
An-24B: just right, looks like i'm gonna make it. screenshot is just before i hit the invisible wall