Engine and Related Systems
T-45C TS, ADV & IUT ENG-04
2.
a.
Fuel from fuel control system introduced
through 18 fuel spray nozzles and mixed with
chamber
b.
Fuel/N2 air mixture ignites and expands, forcing
high pressure gases into turbine section
3.
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
4.
Exhaust: annular bypass air mixes with turbine
gases in exhaust mixer and exits through fixed
convergent nozzle and tailpipe
5.
Monitoring 1.4.6.5
Sg 2, fr 4
a.
RPM: sensed by a tachometer generator
Engine Instruments &
attached to high-speed gearbox measures N2
MFD Engine 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
Original (9-98)
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