T o d d P a t t i s t writes:

I do wish people would stop discussing the roll. A pure
rolling motion cannot affect the force vector in any way
relevant to producing 1 G into the seat.

It's certainly true that rolling alone does not change the magnitude
of the acceleration vector at axis around which the roll occurs.

Mx is right, but I think he misses the point - there's
nothing that says we can't start in a steady climb or end in
a steady descent. Both have a steady 1G load on the
aircraft.

Even if you start in a steady climb or descent, you cannot avoid a
change in G forces in any maneuver that requires a change in the rate
of change of altitude, which includes a typical barrel roll that
preserves positive G on the pilot.

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