T-45A UJPT, E2-C2, ADV & IUT Eng-13
Hydraulic Subsystems
Cockpit controls and indicators used to operate
the landing gear system include the LDG GEAR
UP/DN handle, the landing gear handle warning
(red) light, the EMER GEAR handle, the LDG
GEAR LEFT, RIGHT, and NOSE lights, the LDG
GEAR DOOR light, the WHEELS warning light,
and the TONE button.
Maximum airspeed for lowering the gear and
flying with the gear extended is 200 KIAS and
the landing gear retract command is disabled
unless the nose strut is extended and the nose
wheel is centered.
PROGRESS CHECK
Question 1 -- 1.5.4.1.1.1
How is the landing gear system controlled and
operated and what is the maximum allowable
airspeed for flying with the gear extended?
ANSWER: The landing gear is electrically controlled
and hydraulically operated and the maximum airspeed
for flying with the gear extended is 200 KIAS.
II.
Landing gear-related hydraulic components
Sg 2, fr 1
Lesson Organization
A.
Brakes/anti-skid
1.
Major components 1.4.10.3.1, 1.4.11.3.1
Sg 2, fr 2
WARNING
CAUTION
HYDFAIL
RATEXTEND
LIGHT
LIGHT
a.
Master cylinder: converts foot
CAUTION
CAUTION
HYD1PRESS LIGHT
HYD2PRESS
LIGHT
MICRO
SWITCH
RAT
pressure into hydraulic pressure that
L AIL
controls brake control valve
RAIL
HAND
PUMP
STAB
SPD BRK
SLATS
FLAPS
LGEAR
NWS
L BAR
HOOK
HYD1PRESSURE
MECHANICAL
WHL BRKS
HYD2PRESSURE
CHECK VALVE
PRESSURIZED WITH
RAT EXTENDED
AND GATE
ELECTRICAL
HYDRAULIC SYSTEM BLOCK
DIAGRAM
(8-03) Original
Page 13-17
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