T-45A UJPT, E2-C2, ADV, & IUT Eng-09
Hydraulic System
(2) Stores power for emergency
deployment of full flaps in event
of HYD 1 failure (no retraction)
(3) Supplies enough pressure for at
least 10 full wheel brake applica-
tions following emergency flap
extension
(4) Dampens pressure fluctuations in
the brake lines during normal
brake operation
c.
Physical
(1) Consists of a cylinder with a free-
floating piston that separates fluid
from nitrogen
(2) Pressurized with nitrogen
(1,300 +/- 50 psi)
5.
Power supply package
Overlay 5
Power Supply Package Priority
Valve
a.
Flight control
(1) Location: aft right fuselage, right
behind wing
(2) Description
(a) A priority valve isolates
general services and directs
HYD 1 pressure to flight
controls only when HYD 1
pressure drops below 1,500
psi
(b) When HYD 1 pressure above
1,600 psi, a priority valve
redirects pressure to the
general services
Page 9-7
(8-03) Original
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