[CFM] CFM56-5B发动机培训教材-孔探(英文)(Pdf)

TRAINING MANUAL
CFM56-5B
BORESCOPE INSPECTION
MARCH 1998
CTC-071

Chapter Section Page
Table of contents 1 to 2
Lexis 1 to 8
72-00-00 Engine inspection areas and components 1 to 26
Borescope ports 1 to 22
Borescope equipment 1 to 10
Borescope inspection 1 to 62

BORESCOPE INSPECTION AREAS
Identification.
The following are the inspection areas borescoped by the technician on the CFM56-5 engine :
- Fan and booster - the fan blades, outlet guide vanes,booster blades and the booster vanes.
- High pressure compressor - high pressure compressor (HPC) rotor blades and stator vanes.
- Combustor
a. Single annular combustor (SAC)
b. Dual annular combustor (DAC) optional
- Fuel nozzles (20)
- High pressure turbine (HPT) - rotor and HPT nozzle guide vanes.
- Low pressure turbine (LPT) - rotors and nozzle guide vanes.
Purpose.
The purpose of the CFM56-5B borescope inspection of selected areas is to evaluate the condition of the individual components and, if necessary, monitor them under a cycle limitation, repair them or remove the engine before a failure of the component occurs.
The high bypass, dual rotor, axial flow turbofan engine uses a low pressure and a high pressure rotor, which turn independently.