Originally Posted by
CONSO
BUT if you turn the same wing inverted or upside down , then the LIFT VECTOR ADDS TO THE GRAVITY VECTOR, and absent some other forces the plane will go down, still in level flight -at least for a while.
That's exactly right, and that is why when doing a quick aileron roll, you find the aircraft accelerating downwards at nearly 20 m/s2 during the inverted phase.....
....oh, wait.