T-45A UJPT, E2-C2, ADV, & IUT Eng-26
Engineering Review
NOTE: An engine bleed air valve that has
failed to the open position could cause up
to a 25 percent loss in thrust.
F.
Engine icing, vibrations, and stalls
1.
Engine icing is normally accompanied by
loss of thrust/airspeed with no apparent
loss of rpm. Surges, chugs, and EGT
increases may be experienced
2.
Engine stalls may be marked by loud
popping or banging noises. Normally EGT
increases while performance and rpm
decrease
3.
Vibrations can be initial indications of
impending malfunction or failure. While
airframe vibrations and/or engine stalls
and chugs may not present immediate
Sg 2, fr 1
threat to flight safety, it is essential that
Lesson Organization
they are regarded seriously and their
source isolated as soon as possible
Sg 2, fr 2
II.
Fuel system
A.
Operational characteristics
1.
Pressurized to approximately 6.0 psig
a.
Suppresses tendency of fuel to
SIMPLIFIED FUEL SYSTEM
vaporize at high altitudes
BLOCK DIAGRAM
b.
Aids in transfer of fuel
Sg 2, fr 3
c.
Keeps collector tank full
2.
Boost pump(s)
a.
Driven by AC motor through
dedicated inverter
b.
Inverter receives power from 28 VDC
AIRCRAFT FUEL SYSTEM
BLOCK DIAGRAM
essential services bus
Page 26-14
(8-03) Original
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