T-45C TS, ADV & IUT ENG-27/ENG-28
Engineering Review
3.
control system introduced through 18 fuel spray
nozzles and mixed with N2 compressed air in
annular combustion chamber
4.
Power generation
a.
N2 and N1 turbines extract energy from gases
exiting combustion chamber to drive their
respective compressors through coaxial shafts
b.
Internal gearbox extracts mechanical energy
from N2 shaft, providing power to external
gearbox
c.
External gearbox mechanically drives engine
and aircraft accessories, e.g., generator,
hydraulic pumps, and fuel pumps
5.
Monitoring 1.4.6.5
Sg 2, fr 55
Primary Instruments
a.
RPM: sensed by a tachometer generator
and MFD Engine
attached to high-speed gearbox measures N2
Display
shaft speed
(1) Max rpm: 104%
(2) Max continuous rpm: 100%
(3) Idling speed: 55 +/- 2% at sea level (with
bleed valve closed)
b.
Exhaust gas temperature (EGT): thermocouple
junction box derives EGT information from two
thermocouples mounted in gas flow just aft of
N1 turbine
(1) Military Rated Thrust (MRT): 610 degrees
C, time restricted to 30 minutes per flight
hour
(2) Maximum continuous: 550 degrees C, time
unrestricted
(9-98) Change 5
Page 27-23
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