^ Wow.
I still don't understand how the planes maintain altitude during a steep bank, since the vertical lift component must vary with the cosine of the bank angle. Forty five degree bank angle, vertical lift component goes to only 71%. At a 90° bank, vertical lift is zero, as in this well-known incident:
https://youtu.be/182AepOJjMsAnyhow, apart from using aerodynamic surfaces to point the plane's yaw axis upward so that it's partially flying on the reduced vertical wing lift, and partially hanging on its engines, by giving it left rudder in a steep right bank, I don't see how they maintain altitude.
Either that, or it's just maintaining a ballistic trajectory, and the fall rate is not obvious to a casual observer such as myself.
Flying upside down I can understand, you're just changing the angle of attack so that the lift is still upward despite the wing being upside down. But unless you're doing a half-loop, you've still got to go through a bank again to re-establish right-side-up flight.
Terry, landlubber, '97 Subaru Outback pilot.