T-45C TS, ADV & IUT ENG-09
Hydraulic System
Sg 1, fr 2
Lesson Organization
PRESENTATION
HYDRAULIC SYSTEM
* T-45C hydraulic system
overview
I.
T-45C hydraulic system overview
* Hydraulic system no. 1 (HYD 1)
* Hydraulic system no. 2 (HYD 2)
A. T-45C has two independent hydraulic systems: HYD 1
* Emergency hydraulic system
and HYD 2. Each system contains a reservoir and is
* Aircraft interfaces
pressurized by an engine-driven pump (EDP).
Sg 1, fr 3, p 1
1.
HYD 1 provides hydraulic pressure to power the
Simplified Hydraulic
System Block Diagram
flight controls (ailerons and stabilator) and the
(3 overlays)
general services.
2.
HYD 2 provides hydraulic pressure to power only the
flight controls.
B. 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
Overlay 1
controls. The emergency system is integral to the HYD 2
HYD 1 System
system.
Overlay 2
HYD 2 System
C. Hydraulic system controls and indicators
Overlay 3
RAT
1.
Cockpit controls and indicators
Wall Chart: Cutaway
a.
HYD 1, HYD 2, and BRAKE pressure gauges
View T-45C
Wall Chart: T-45C
b.
HYD 2 RESET button
Cockpit
c.
Warning and caution advisory panels
Sg 1, fr 5
Fig 1: Hydraulic
(1) HYD FAIL warning light
System Pressure
Gauges/Reset Button
(2) HYD 1 and HYD 2 and RAT caution lights
Sg 1, fr 7
Fig 2: Warning and
2.
Aircraft exterior indicators
Caution Advisory Light
Panels
a.
Accumulator pressure gauges: HYD 1 FC;
HYD 2 FC; wheelbrake/emergency flap
b.
HYD 1 and HYD 2 reservoir quantity indicators
(9-98) Original
Page 9-3
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