T-45A UJPT, E2-C2, ADV, & IUT Eng-09
Hydraulic System
3.
FC accumulator
Overlay 3
HYD 2 FC Accumulator
a.
Location: left intake above wing
b.
Description
(1) Stores power for aileron and
stabilator during periods of high
demand
(2) Dampens pressure fluctuations
c.
Physical
(1) Consists of a cylinder with a free-
floating piston that separates fluid
from nitrogen
(2) Pressurized with nitrogen (1,100
+/- 50 psi)
4.
Emergency package assembly
Overlay 4
Emergency Package Assembly
a.
Location: left upper fuselage behind
wing
b.
Description
(1) Functional
(a) Allows HYD 2 to charge RAT
(b) Automatically deploys RAT
and directs emergency
hydraulic pressure to flight
control services when HYD 2
pressure drops below 1,500
psi
(c) Isolates sections of the HYD 2
system from the emergency
hydraulic system when the
RAT is deployed. Does not
put HYD 2 EDP pump in
bypass mode
Page 9-18
(8-03) Original
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