Textron Cessna 172R User Manual

SECTION
7
AIRPLANE
&
SYSTEMS DESCRIPTION
CESSNA
MODEL
172R
The
empennage
(tail
assembly)
consists
of
a
conventional verti¬
cal
stabilizer, rudder,
horizontal
stabilizer,
and
elevator. The
vertica
stabilizer
consists
of
a
spar,
formed
sheet
metal ribs
and
reinforce
ments,
a
wraparound
skin
panel,
formed
leading
edge
skin
and
a
dorsal. The rudder is constructed
of
a
formed
leading
edge
skin and
spar
with
attached
hinge
brackets
and
ribs,
a
center
spar,
a
wrap
around
skin,
and
a
ground
adjustable
trim
tab
at
the
base
of
the
trailing
edge.
The
top
of
the
rudder
incorporates
a
leading
edge
ex¬
tension which
contains
a
balance
weight.
The
horizontal
stabilizer
is
constructed
of
a
forward
and
aft
spar,
ribs and
stiffeners,
center,
left,
and
right
wrap
around
skin
panels,
and
formed
leading edge
skins. The
horizontal
stabilizer
also
contains
the
elevator
trim
tab
actuator.
Construction
of
the
elevator
consists
of
formed
leading
edge
skins,
a
forward
spar,
aft
channel, ribs,
torque
tube
and
bellcrank,
left
upper
and lower
"V"
type
corrugated
skins,
and
right
upper
and
lower
"V"
type
corrugated
skins
incorporating
a
trailing
edge
cutout
for
the
trim tab.
The
elevator
tip
leading
edge
extensions
incorporate
balance
weights.
The
elevator
trim tab
consists
of
a
spar,
rib,
and
—
upper
and lower
"V"
type
corrugated
skins.
The
airplane’s
flight
control
system
(Refer
to
Figure
7-1)
consists
of
conventional
aileron,
rudder,
and
elevator control
surfaces.
The
control
surfaces
are
manually
operated
through
cables
and
mechanical
linkage
using
a
control wheel
for
the
ailerons and
elevator,
and
rudder/brake
pedals
for
the rudder.
TRIM
SYSTEM
A
manually
operated
elevator trim
system
is
provided
(Refer
to
Figure
7-1).
Elevator
trimming
is
accomplished
through
the
elevator
trim
tab
by
utilizing
the
vertically
mounted
trim
control wheel
in
the
cockpit.
Forward
rotation
of
the
trim wheel
will
trim
nose
down;
conversely,
aft
rotation
will
trim
nose
up.
FLIGHT
CONTROLS
7-6
Dec
2/96
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Textron Cessna 172R Specifications

General

Brand	Textron
Model	Cessna 172R
Category	Aircrafts
Language	English