"Maxwell" wrote in
:


"Dudley Henriques" wrote in message
news:2007061116042375249-dhenriques@rcncom...
On 2007-06-11 12:39:10 -0400, "Maxwell" said:

No. Barrel rolls do NOT go negative generally. If you went negative
you would change the roll arc and destroy the roll. You can unload to
0 g through the top however without destroying the roll arc, but if
you do, you have to reapply positive g almost immediately as you pass
through inverted to regain the roll arc. As I said, you can do a
barrel roll at any positive g; as tight or as little as the flight
envelope for the aircraft will allow up to 90 degrees of flight path
direction change at the roll apex.
Generally the roll profile will be the application of positive g
above +1 from the roll initiation (either from level flight or from a
slight dive offset to gain energy if needed) followed by coordinated
roll and back pressure into the roll arc maintaining positive g with
varying back pressure to maintain the roll arc through the roll and
through the recovery back to the entry heading.
You can NOT at any time during a barrel roll, allow the g to go
negative as doing so will instantly destroy the arc of the roll.
Dudley Henriques


No it won't, and yes you can.


Nope.

You';re wrong dude.

That's OK, you can go on being wrong. I don't have to fly with you.
....


Bertie