On 2007-06-11 23:05:47 -0400, "Maxwell" said:


"Dudley Henriques" wrote in message
news:2007061120422616807-dhenriques@rcncom...
On 2007-06-11 19:00:00 -0400, "Maxwell" said:


"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.

I'm sorry, but you are totally incorrect.
Dudley Henriques


Certainly not. If you think you cannot roll the wings of an aircraft, and
remain in total control of the g loading, you are totally incorrect.

Not sure what you mean here as your comment refers to me or what I have
said, but I can assure you that you most certainly CAN roll an airplane
and maintain complete control of the g. If a pilot can't do this, I
would strongly suggest that rolling the airplane not be attempted :-)

If you want to argue the proper name for this manuver is not a barrel roll,
that's another topic, and I would agree. Many people incorrectly refer to
all rolls as barrel rolls. But then we would just be nit picking, wouldn't
we.

Any roll performed by an airplane through 3 dimensional space is a
barrel roll by definition.
Not sure again exactly what you mean by your comment.
DH