PSM POWER SUPPLY MODULE
PSS (ECU) PRESSURE SUB-SYSTEM
PSU POWER SUPPLY UNIT
PT TOTAL PRESSURE
PT2 FAN INLET TOTAL AIR PRESSURE
(PRIMARY FLOW)
Q
QAD QUICK ATTACH DETACH
QTY QUANTITY
R
RAM RANDOM ACCESS MEMORY
RDS RADIAL DRIVE SHAFT
R/H RIGHT HAND
RPM REVOLUTIONS PER MINUTE
RTD RESISTIVE THERMAL DEVICE
RTV ROOM TEMPERATURE VULCANIZING
(MATERIAL)
RVDT ROTARY VARIABLE DIFFERENTIAL
TRANSFORMER
S
SAC SINGLE ANNULAR COMBUSTOR
SAV STARTER AIR VALVE
SB SERVICE BULLETIN
SCU SIGNAL CONDITIONING UNIT
SD SYSTEM DISPLAY
SDAC SYSTEM DATA ACQUISITION
CONCENTRATOR
SDI SOURCE/DESTINATION IDENTIFIER
(BITS) (CF ARINC SPEC)
SDU SOLENOID DRIVER UNIT
SER SERVICE EVALUATION REQUEST
SFC SPECIFIC FUEL CONSUMPTION
SG SPECIFIC GRAVITY
SLS SEA LEVEL STANDARD
(CONDITIONS : 29.92 in. Hg/59 F)
SMM STATUS MATRIX
SMP SOFTWARE MANAGEMENT PLAN
S/N SERIAL NUMBER
SNECMA SOCIETE NATIONALE D’ETUDE ET
DE CONSTRUCTION DE MOTEURS
D’AVIATION
SOAP SPECTROMETRIC OIL ANALYSIS
PROGRAM
SOL SOLENOID
SOV SHUT-OFF VALVE
S/R SERVICE REQUEST
S/V SHOP VISIT
SVR SHOP VISIT RATE
SW SOFTWARE
T
T12 FAN INLET TOTAL AIR
TEMPERATURE
T25 HPC INLET AIR TEMPERATURE
T3 HP COMPRESSOR DISCHARGE AIR
TEMPERATURE
T49.5 EXHAUST GAS TEMPERATURE
T5 LPT DISCHARGE TOTAL AIR
TEMPERATURE
TAT TOTAL AIR TEMPERATURE
TBD TO BE DETERMINED
TBV TRANSIENT BLEED VALVE
T/E TRAILING EDGE
T/C THERMOCOUPLE
TC (T Case) HPT CASE TEMPERATURE
TCC TURBINE CLEARANCE CONTROL
TCJ TEMPERATURE COLD JUNCTION
TECU ELECTRONIC CONTROL UNIT
INTERNAL TEMPERATURE
TEO ENGINE OIL TEMPERATURE
TGB TRANSFER GEARBOX
Ti TITANIUM
TLA THRUST LEVER ANGLE
TM TORQUE MOTOR
TMC TORQUE MOTOR CURRENT
TO/GA TAKE OFF/GO AROUND
T/O TAKE OFF
T oil OIL TEMPERATURE
TPU TRANSIENT PROTECTION UNIT
T/R THRUST REVERSER
TRA THROTTLE RESOLVER ANGLE
TRDV THRUST REVERSER DIRECTIONAL
VALVE
TRF TURBINE REAR FRAME
TRPV THRUST REVERSER PRESSURIZING
VALVE
TRSOV THRUST REVERSER SHUTOFF VALVE
TSI TIME SINCE INSTALLATION (HOURS)
TSN TIME SINCE NEW (HOURS)
TTL TRANSISTOR TRANSISTOR LOGIC
U
UER UNSCHEDULED ENGINE REMOVAL
V
VAC VOLTAGE, ALTERNATING CURRENT
VBV VARIABLE BLEED VALVE
VDC VOLTAGE, DIRECT CURRENT
VDT VARIABLE DIFFERENTIAL TRANSFORMER
VRT VARIABLE RESISTANCE TRANSDUCER
VSV VARIABLE STATOR VANE
W
WDM WATCHDOG MONITOR
WFM WEIGHT OF FUEL METERED
WOW WEIGHT ON WHEEL
ENGLISH/METRIC CONVERSIONS
METRIC/ENGLISH CONVERSIONS
1 mile= 1.609 km
1 km = 0.621 mile
1 ft = 0.3048 m or 30.48 cm
1 m = 3.281 ft. or 39.37 in.
1 in. = 0.0254 m or 2.54 cm
1 cm = 0.3937 in.
1 mil. = 25.4 10-6 m or 25.4mm
1 mm = 39.37 mils.
1 in.2 = 6.45 cm²
1 m² = 10.76 sq. ft.
1 cm² = 0.155 sq.in.
1 USG = 3.785 l ( dm³ )
1 in.3 = 16.39 cm³
1 m³ = 35.31 cu. ft.
1 dm³ = 0.264 US gallon
1 cm³ = 0.061 cu.in.
1 lb = 0.454 kg
1 kg =2.205 lbs
1 psi = 6.890 kPa or 6.89 x 10-2 bar
1 Pa = 1.45 x 10-4 psi
1 kPa = 0.145 psi or 0.01 bar
1 bar = 14.5 psi
°F = 1.8 x °C + 32
°C = ( °F - 32 ) /1.8
INTRODUCTION TO THE CFM56 FAMILY
The CFM56 engine, a high by-pass, dual rotor, axial flow
turbofan, was designed in the mid 70’s.
It is a product of CFMI. CFM International is a company
jointly owned by GENERAL ELECTRIC (GE) of the USA,
and SOCIETE NATIONALE D’ETUDE ET DE
CONSTRUCTION DE MOTEURS D’AVIATION
(SNECMA) of France.
CFMI, with the full backing of parent companies holding
equal shares, has a dual function :
- Overall program management, on behalf of both GE
and SNECMA
- Single interface with customers for marketing and
product support
CFM INTERNATIONAL ORGANIZATION
Engine Applications<BR>The following chart shows the various engine models for<BR>the Airbus A319-A320-A321 aircraft.<BR>The engine used on these aircraft is the CFM56-5B,<BR>which has several different thrust ratings ranging from<BR>22000 to 33000 lbs.
<P>CFM56-5B MAIN CHARACTERISTICS</P>
<P>Type of engine Turbo fan<BR>Arrangement Two spool axial flow<BR>Rotation Clockwise (ALF)<BR>Compressors<BR>- Low Pressure:<BR>Fan Stage 1<BR>Booster Stages 2 to 5<BR>- High Pressure:<BR>HP Compressor Stages 1 to 9<BR>Combustion chamber Annular SAC (option DAC)<BR>Turbines<BR>- HP Turbine Single stage<BR>- LP Turbine Four stages<BR>Weight 2381 kg (5249 lbs)<BR>Overall dimensions<BR>- Length 2.94m (115.86 ins)<BR>- Height 2.14m (83.65 ins)<BR>- Width 1.97m (77.88 ins)</P>
CFM-56-5B
