From Aerodynamics for Naval Aviators

n=1/cos(bank angle)

n= load factor in G's

ROT=(1,091*tan(bank angle))/V
r= v^2/(11.26*tan (bank angle)

ROT= rate of turn in degrees per second
r= turn radius in feet, divide by 6078 ft/nm to get nm.
V= velocity, knots

At 250 knots and a 30 degree bank this would be a 2.51 degree per second
turn. It would take 107 seconds to make a 270 turn.

John Bell
www.cockpitgps.com

"Garyurbach" wrote in message
...
You got it.

I am a former student pilot (lost interest after moving constantly set me
back), and I need help from someone with ATP experience on this one.

Surely a 757 can make a descending turn 270 degrees in 2.5 minutes? Maybe,
it's
not what an ATP would do to passengers, but it's not some plane-stressing
move?

The move, before the crash, sounded like a spiraling descent, or an
emergency
descent.

Any help would be appreciated, even if it's to point me to someone who can
give
me the answers.

:-)