CFM CFM56-2 - Combustor Section; Single Annular Combustor (SAC)

EFFECTIVITY
ALL CFM56 ENGINES
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CFM56-ALL TRAINING MANUAL
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BORESCOPE INSPECTION
Page 32
Sep 03
COMBUSTOR SECTION
(ALL) :
The combustor section, consisting of the combustion
case and chamber, is located between the HPC and the
LPT.
It produces the necessary energy to drive the turbine
rotors.
Fuel, supplied by 20 fuel nozzles around the combustion
case, is mixed with air from the HPC and ignited by 2
igniter plugs, which are at the 4 and 8 o’clock positions.
The front face of the combustor is attached to the rear of
the HPC and its rear face is bolted onto the LPT module
front ange.
The rear part of the combustor houses the HPT module
and the stage 1 LPT nozzle.
Single Annular Combustor (SAC).
The combustion chamber is housed in the combustion
case and is installed between the HPC stator stage 9 and
the HPT nozzle.
The combustion chamber consists of :
- The dome, which supports the fuel nozzles, sleeves
and deectors.
- The outer and inner cowls, which are bolted to the
outer and inner liners and the dome.
- The outer and inner liners, which are designed with
panel overhangs containing closely spaced holes
for lm cooling.
TOC