T-45C TS, ADV & IUT ENG-27/ENG-28
Engineering Review
starting engine or applying external
hydraulic pressure (wheel brakes must
be operative prior to towing aircraft)
2.
Hydraulic system no. 2 (HYD 2) 1.4.8.3.2
Sg 6, fr 13
Reservoir
a.
Description the HYD 2 reservoir supplies fluid to
the HYD 2 engine-driven pump (EDP) that, in
turn, produces hydraulic pressure to power the
flight controls.
b.
HYD 2 components
(1) Reservoir
(a) Location: RAT bay, topside of aircraft,
forward of the tail section
(i)
Stores hydraulic fluid for HYD 2
operation
(ii) Provides fluid under nitrogen
preload pressure to HYD 2 to
prevent EDP cavitation
(2) Engine-driven pump (EDP)
Sg 6, fr 14
Engine-Driven Pump
(EDP)
(a) Produces hydraulic pressure for HYD 2
system
(b) Output volume varies in response to
demand
(c) Constant output pressure: 3000 psi at
6 gpm flow due to smaller load
Sg 6, fr 15
(3) FC accumulator
FC Accumulator
(a) Stores power for aileron and stabilator
during periods of high demand and
dampens pressure fluctuations
(b) Pressurized with nitrogen (1100 + 50
psi)
(9-98) Original
Page 27-53
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