"Dave Stadt" wrote in message

(2). Fill the glass with water and place it atop the instrument
panel.

(3). Do an aileron roll.

Which proves what? Place a glass of water atop the instrument panel and
execute a steep turn. It won't stay there, Are you saying that a steep
turn isn't a positive G manoeuvre? You haven't thought this through...


If you stay coordinated it certainly will stay. Ever see the video of
Hoover pouring a glass of water while doing a roll.

If you stay *perfectly* coordinated. I would have no problem demonstrating
an aileron roll with a cup of MacDonald's most dangerous firmly secured in
my lap. (Filled to no more than a couple inches below the brim.) I have a
key fob that I sometimes watch during aerobatic manoeuvres. It doesn't move
much during coordinated 1G stuff. But it moves a bit.

le moo