T-45C TS, ADV & IUT ENG-07
Aircraft Fuel System
(5) Air pressure switch senses pressurization
loss
(6) Datum air (RAM air)
(a) Enters through inward venting line
protruding through fuselage right skin
(b) Provides air pressure slightly above
ambient pressure to maintain
pressurization at positive value
B.
Fuel delivery
Overlay 1
Fuel Delivery
1.
Normal operations
a.
Function: provides fuel to GTS and engine fuel
system
b.
Operational description
(1) Refueling access door closed—refueling
switch held in FLIGHT position
(2) Internal tanks
(a) Fuel level in fuselage tank falls as fuel
is drawn from negative-g compartment
(b) Pressurized air aids gravity in fuel
transfer to wing tank
(c) Wing tank feeds collector tank,
collector tank feeds negative-g
compartment
(d) Fuel from negative-g compartment
supplies GTS and engine
(3) Check valves prevent reverse flow during
aircraft maneuvers
Original (9-98)
Page 7-10
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