T-45A UJPT, E2-C2, ADV, & IUT Eng-02
Engine
b.
Cooling
(1) Engine shafts and bearing thrust
loading
(2) Rear face of N2 turbine
(3) Both sides of N1 turbine
(4) N1 turbine vane
c.
Anti-icing intake spinner
2.
delivery air (P3), tapped from four areas on
engine case for
a.
On-board oxygen generating system
(OBOGS)
b.
Environmental control system (ECS)
and overboard engine bleed, i.e.,
steam ingestion bleed air
c.
Fuel tank pressurization
d.
P1 probe anti-icing
F.
Bleed air vents: two bleed valves that have
significant effects on engine operation, one
functions during engine start, and the other
functions during catapult launch
1.
The engine bleed valve relieves pressure
prevents N1 compressor stalls
(approximately 25% loss of thrust; from
5,527# to 4,145#)
2.
A steam ingestion bleed valve vents
additional bleed air (relieves pressure from
(8-03) Original
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