error 401
Isn't the fact that fighter jets fly straight up only due to the thrust available?
Don't forget that AoA is to the Relative Wind. In the case of going straight up the relative wind is now flowing over the wing normally i.e. from the sky to the earth so to speak. The wings will now produce lift in the horizontal plane. I don't think it has anything to do with lift increasing again and therefore allowing the a/c to fly straight up. That would be a new aerodynamic law!