DOC AIRBUS | AMM A320FPOWER PLANT - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
Each engine is housed in a nacelle suspended from a pylon attached below the wing.
The right and left power plant are interchangeable. Except the cascades that provide specific efflux pattern control during reverse operation.
The demountable power plant consists of the engine and its accessories, the engine air intake, the primary exhaust (including centerbody), the engine mounts.
The Engine Build Up (EBU) consists of the engine and its accessories without the engine air intake, the primary exhaust (including centerbody).
The Quick Engine Change (QEC) consists of the engine and its accessories and additional items dependent on selected configuration.
** ON A/C NOT FOR ALL Each engine is housed in a nacelle suspended from a pylon attached below the wing.
The right and left power plant are interchangeable. Except the cascades that provide specific efflux pattern control during reverse operation.
The demountable power plant consists of the engine and its accessories, the engine air intake, the primary exhaust (including centerbody), the engine mounts.
The Engine Build Up (EBU) consists of the engine and its accessories without the engine air intake, the primary exhaust (including centerbody).
The Quick Engine Change (QEC) consists of the engine and its accessories and additional items dependent on selected configuration.
2. Description
A. Engine
The engine is a dual-rotor, variable stator, high-bypass ratio turbofan power plant. The design and configuration of the engine are based on obtaining long life high reliability and easy access for line maintenance.
It is a modular design which permits the changing of a major assembly without complete dissassembly of the engine. The principal modules of the engine are low pressure compressor (fan stator and fan rotor), high pressure compressor, turbine frame, combustion chamber, high pressure turbine, low pressure turbine and gearbox.
The weight of the demountable power plant is approximately 5147 lbs (2335 kg).
The engine is a dual-rotor, variable stator, high-bypass ratio turbofan power plant. The design and configuration of the engine are based on obtaining long life high reliability and easy access for line maintenance.
Engine - SchematicIt is a modular design which permits the changing of a major assembly without complete dissassembly of the engine. The principal modules of the engine are low pressure compressor (fan stator and fan rotor), high pressure compressor, turbine frame, combustion chamber, high pressure turbine, low pressure turbine and gearbox.
The weight of the demountable power plant is approximately 5147 lbs (2335 kg).
B. Cowling
The cowling assembly consists of:
The hinged fan reverser and fan cowls are attached to the pylon.
The fan cowls are hinged at the upper part by three hinges.
They are held open by hold-open rods providing access to the engine for:
The cowling assembly consists of:
- the air intake cowl,
- the fan cowl,
- the fan reverser,
- the primary exhaust (primary nozzle and center body).
The hinged fan reverser and fan cowls are attached to the pylon.
The fan cowls are hinged at the upper part by three hinges.
They are held open by hold-open rods providing access to the engine for:
- maintenance,
- rigging,
- trouble shooting.
- a conductive graphite material within the skin.
C. Mounts
(Ref. AMM D/O 71-20-00-00)
The engine is attached to the pylon by two damage tolerant mounts. The mounts are the main attaching structures (forward and aft).
The forward mount comprises four attach bolts that connect the engine directly to the pylon.
The aft mount consists of a link and beam system attaching the engine to the pylon.
(Ref. AMM D/O 71-20-00-00)
The engine is attached to the pylon by two damage tolerant mounts. The mounts are the main attaching structures (forward and aft).
The forward mount comprises four attach bolts that connect the engine directly to the pylon.
The aft mount consists of a link and beam system attaching the engine to the pylon.
D. Attachment Fittings
(Ref. AMM D/O 71-40-00-00)
The attachment fittings and support brackets ensure the attachment on the engine of:
(Ref. AMM D/O 71-40-00-00)
The attachment fittings and support brackets ensure the attachment on the engine of:
- components,
- ducts,
- pipes,
- electrical cables.
- the engine core,
- the fan case,
- the accessories,
- the accessory gearbox.
E. Fire Seals
The fire seals provide fire protection between the engine compartments (fan and core compartments). The fire seals separate the space within the engine into compartments.
This provides a means of isolation to limit fire propagation.
The fire seals provide fire protection between the engine compartments (fan and core compartments). The fire seals separate the space within the engine into compartments.
This provides a means of isolation to limit fire propagation.
F. Electrical Harness
(Ref. AMM D/O 71-50-00-00)
The engine electrical harness serves for connection with the electrical components mounted in the nacelle pylon.
The engine electrical harness:
(Ref. AMM D/O 71-50-00-00)
The engine electrical harness serves for connection with the electrical components mounted in the nacelle pylon.
The engine electrical harness:
(1) distributes the power required by the aircraft electrical system,
(2) transmits signals for:
- nacelle sub-systems,
- engine control,
- monitoring functions.
G. Engine Drains
(Ref. AMM D/O 71-70-00-00)
The drain and vent system consists of lines collecting and carrying waste fluids and vapors overboard.
This system drains accessories and engine components.
(Ref. AMM D/O 71-70-00-00)
The drain and vent system consists of lines collecting and carrying waste fluids and vapors overboard.
This system drains accessories and engine components.