I did some tinkering, and it's probably because the main wings are symmetrical and have some sort of internal limit of 15 degrees angle of attack. I made a new plane that's made up of an engine and cockpit, with symmetrical wings, and the 15 degree angle of attack limit seemed to apply to this aircraft as well.
@overlord5453 The link is in the OP.
I did some tinkering, and it's probably because the main wings are symmetrical and have some sort of internal limit of 15 degrees angle of attack. I made a new plane that's made up of an engine and cockpit, with symmetrical wings, and the 15 degree angle of attack limit seemed to apply to this aircraft as well.
@overlord5453 Even with tiny control surfaces, it still has issues.
The interesting thing is that the plane behaves fine at -16 degrees AoA, but as soon as you get to -14 it goes bad.