IRFP-01
Metro Review
(4)
The pilot will also have the tendency to
bank the aircraft into an attitude
erroneously perceived to be straight
and level
b.
The Graveyard Spiral
(1)
When entering a spin, the fluid in the
semicircular canals begins to
accelerate and the pilot's first
impression is accurate, a spin is
perceived
(2)
After about 10 to 20 seconds, the fluid
reaches a constant speed and the
sensation of spinning is replaced by
one of no rotary motion
(3)
If the spin is then terminated the fluid
cause a sensation of spinning in the
opposite direction
(4)
The pilot may then try to correct for this
false impression by putting the aircraft
back into the original spin
c.
Vertigo/Coriolis Illusion
(1)
An abrupt head movement in a
prolonged constant-rate turn can
create the illusion of rotation or
movement in an entirely different axis
(2)
Looking down, as you might when
searching for a chart in the cockpit,
and then looking up can cause vertigo
d.
Inversion Illusion
(1)
An abrupt change from climb to
straight-and-level can excessively
stimulate the sensory organs for
gravity and linear acceleration creating
the illusion of tumbling backwards
(2)
The pilot may correct for this illusion by
pushing the nose of the aircraft
abruptly downward, thus intensifying
the illusion
(8-97) Change 2
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