T-45C TS, ADV & IUT ENG-27/ENG-28
Engineering Review
IV. Hydraulic System
Sg 6, fr 1
A. Hydraulic system general
Simplified Hydraulic
System Block Diagram
1.
T-45C has two independent hydraulic systems:
HYD 1 and HYD 2. Each system contains a
reservoir and is pressurized by an engine-driven
pump (EDP)
a.
HYD 1 provides hydraulic pressure to power the
flight controls (ailerons and stabilator) and the
general services
b.
HYD 2 provides hydraulic pressure to power
only the flight controls
2.
A deployable ram air turbine (RAT) provides
emergency hydraulic system pressure which, in
case of a failure of HYD 2 EDP, should provide
pressure to the flight controls. The emergency
system is integral to the HYD 2 system
B. Hydraulic system major component and operating
characteristics
Sg 6, fr 3
1.
Hydraulic system no. 1 (HYD 1)
Fig 8: Hydraulic
a.
Description: the HYD 1 reservoir supplies fluid
System Block Diagram
to the HYD 1 EDP which produces hydraulic
pressure to power the flight controls (ailerons
and stabilator) and aircraft general services
(speed brakes, flap/slats, landing gear/gear
doors, wheel/parking brakes, nose wheel
steering, launch bar, and the arresting hook).
Control of the rudder is mechanical
b.
HYD 1 components
(1) Reservoir
Sg 6, fr 4
HYD 1 Reservoir
(a) Location: ram air turbine (RAT) bay,
top side of aircraft, forward of the tail
section
(9-98) Original
Page 27-49
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