Learjet 60 - Page 11

Learjet 60
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Pilot's Manual
AIRCRAFT GENERAL
DESCRIPTION
SEC F#O n% 0
GENERAL DESCRIPTION
The Learjet Model 60 aircraft,
manufactured by Learjet, Inc ., is an all
metal, pressurized, low-wing,
turbofan-powered monoplane .
The
high-aspect ratio, fully cantilevered,
swept-back wings with winglets
are of
conventional riveted construction except
for the upper section
of
the winglets, which is full-depth
honeycomb core bonded
to the
outer skin . The fuselage is of "area
rule" design and
semi-monocoque
construction . Two inverted
"V" ventral fins (delta
fins) are fitted to
the aft section of the tailcone to
provide the aircraft with
favorable
stall recovery
characteristics and additional
lateral/directional
stabili-
ty . Thrust is
provided by two
pod-mounted PW305A
turbofan en-
gines manufactured by Pratt and
Whitney Canada, Inc .
Independent
fuel systems supply
fuel
to
the engines with
fuel storage available
in
wing and fuselage
tanks . Engine-driven
hydraulic pumps supply
hy-
draulic power for
braking, extending and retracting
the landing
gear,
wing flaps, and
spoilers . The landing gear system
is a fully
retractable
tricycle-type gear
with dual main-gear
wheels, anti-skid
braking, and
nose-wheel steering . The
flight controls are
manually controlled
through cables, bellcranks,
pulleys, and push-pull tubes
. Lateral and
directional trim is accomplished by
means of
electrically-actuated
trim tabs installed on the left
aileron and on the
rudder . Longitudinal
trim is accomplished by changing
the angle of incidence
of the
hori-
zontal stabilizer with an
electrically-operated linear
actuator . Aircraft
air conditioning systems
provide heating,
cooling, and pressurization
for the crew, passenger,
and cabin baggage compartments
.
PM-123
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