Tony writes:

There is a flight path, taking into account roll, pitch, yah, and
thrust, that will result in a complete roll with an g meter indicating
1 G into the seat.

No, there is not. You cannot change altitude without a change in G.
Indeed, any acceleration of the aircraft, in any direction, will
change the G force. You can keep it normal to the pilot's seat in
many cases, but you cannot hold its magnitude constant.

My real life airplane, an M20, may not be flown at more than 30 degrees
pitch or 60 degrees bank, but those kinds of limitations do not apply
to someone who games on a flight simulator, or who has a suitably
certified airplane.

In theory, any aircraft can do a barrel roll, as long as the net
acceleration vector is kept downward.

My OP request was to have someone who is skilled in
simulated flight see if their simulated airplane had the control
authority to fly that flight path.

I was able to do it in the default Cessna on MSFS, not very neatly but
with the G force always positive. It's supposedly an extremely safe
maneuver as long as that number stays positive.

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