Originally Posted by
six_degrees
An aileron roll in a perfect world is 1G, sure, close enough. To achieve this you need a high enough rate of roll and enough momentum. A slow roll however will vary between 1G and -1 G. The point is a 1G aileron roll only happens in a decent aircraft when conducted correctly. Anything not designed for it, or with a slower roll rate, will not produce a constant 1 G roll (unless height is sacrificed) and will easily exceed that if things go awry.
A slow roll rate need not be a problem. Just get a good bit of speed, raise the nose nice and high and allow it to drop through the horizon as you roll. You'll get Gs around 1.5 from the initial pull, down to 0.5 or so going inverted and you'll recover at your entry altitude with speed for another manoeuvre. Of course, then it's no longer a 1g manoeuvre, though it's still well within limits for most non-aerobatic aircraft.
One thing to be wary of with rolling manoeuvres. The g force experienced in the cockpit may be quite different to that at the wing tips. The up-going wing in a manoeuvre involving rolling and pulling, such as a barrel roll, may have significantly more loading than the fuselage and you may be exceeding limits without realising it.