What you said about acceleration is true enough, but if you were on
speaking terms with Newton or vector analysis of some other analytical
tools you might understand some of what's been said here.


not continue to offer

On Jun 13, 2:32 pm, Mxsmanic wrote:
Viperdoc writes:
That's the point you idiot- there is no change in direction during a
vertical roll.

You cannot change the attitude, direction, altitude, etc., of the aircraft
without changing its direction in some plane, and that requires acceleration.