T-45C TS, ADV & IUT ENG-27/ENG-28
Engineering Review
(1) Pressurizing oil seals to prevent oil
bleeding into engine airflow and hot gases
fromentering oil system
(2) Cooling
(a) Engine shafts and bearing thrust
loading
(b) Rear face of N2 turbine
(c) Both sides of N1 turbine
(d) N1 turbine vane
(3) Anti-icing intake spinner
b.
delivery air (P3), tapped from four areas on
engine case for
(1) On-board oxygen generation system
(OBOGS)
(2) Environmental control system (ECS) and
overboard engine bleed
(3) Fuel tank pressurization
(4) P1 probe anti-icing
c.
Engine bleed air valve; reduces engine load
during start
NOTE: An engine bleed air valve that has
failed to the open position could cause up to a
25% loss in thrust.
B. Engine system controls, switches, and indicators cockpit
controls: all engine function controls located on left
Sg 1, fr 3
consoles, both cockpits
Engine Controls
1.
IGNITION switch (fwd cockpit only)
Fig 33: Engine
Controls (Forward
a.
NORMAL (guarded): controls power supply to
Cockpit)
ignition system
(9-98) Original
Page 27-18
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