DOC AIRBUS | AMM A320FTRAILING EDGE - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The trailing edge structure is aft of the rear spar between the wing root and the wing tip.
** ON A/C NOT FOR ALL The trailing edge structure is aft of the rear spar between the wing root and the wing tip.
2. Component Location
The trailing edge structure has:
** ON A/C NOT FOR ALL The trailing edge structure has:
Trailing Edge- an overwing panel and an underwing panel
- a shroud box and a fixed shroud
- a false rear spar
- support structures for the trailing edge control surfaces
- access panels.
There are attachments for: - the trailing edge control surfaces and their drive mechanisms.
- the main landing gear and the engine pylon (Ref. AMM D/O 57-26-00-00).
3. Component Description
A. Overwing Panel and Underwing Panel
The overwing panel and the underwing panel are installed inboard of the MLG structure. They are made of carbon fiber with honeycomb cores. Beams add strength to the overwing panel.
Links and bolts attach the overwing panel to:
The underwing panel is attached by links to the rear spar and by bolts to the No. 3 bottom skin panel.
The overwing panel and the underwing panel are installed inboard of the MLG structure. They are made of carbon fiber with honeycomb cores. Beams add strength to the overwing panel.
Links and bolts attach the overwing panel to:
- the fuselage
- the MLG support structure
- the shroud box
- the top skin.
The underwing panel is attached by links to the rear spar and by bolts to the No. 3 bottom skin panel.
B. Shroud Box and Fixed Shroud
The shroud box is aft of the rear false spar, adjacent to the fuselage. It is attached to the overwing panel with bolts and to the fuselage with links. The shroud box has three aluminum-alloy spars, two machined ribs and intermediate sheet ribs. There is a top skin, a bottom skin and a diaphragm.
The fixed shroud is aft of the rear false spar, immediately outboard of the shroud box. It has two machined aluminum-alloy spars/channels, a top plate skin and an etched bottom skin. There is a trailing edge panel which has top and bottom etched skins with a honeycomb core and an aluminum-alloy trailing edge block. There is an escape-rope attachment on the top skin. Links and bolts attach the fixed shroud to the shroud box and the rear spar.
The shroud box is aft of the rear false spar, adjacent to the fuselage. It is attached to the overwing panel with bolts and to the fuselage with links. The shroud box has three aluminum-alloy spars, two machined ribs and intermediate sheet ribs. There is a top skin, a bottom skin and a diaphragm.
The fixed shroud is aft of the rear false spar, immediately outboard of the shroud box. It has two machined aluminum-alloy spars/channels, a top plate skin and an etched bottom skin. There is a trailing edge panel which has top and bottom etched skins with a honeycomb core and an aluminum-alloy trailing edge block. There is an escape-rope attachment on the top skin. Links and bolts attach the fixed shroud to the shroud box and the rear spar.
C. Rear False Spar
The rear false spar is aft of the inner rear spar. It is joined to the rear spar at the kink position adjacent to RIB9. The inboard end is connected to the inner rear spar by the MLG support rib.
The rear false spar has attachments for:
The rear false spar is aft of the inner rear spar. It is joined to the rear spar at the kink position adjacent to RIB9. The inboard end is connected to the inner rear spar by the MLG support rib.
The rear false spar has attachments for:
- the pintle (aft fitting)
- the flap track 2
- the spoiler 1 hinges.
D. Support Structures for the Trailing Edge Devices
The fixed trailing edge includes two support structures. One is adjacent to RIB9, at the kink position, and gives support to the inboard and outboard flaps. This, the flap support structure, has three machined ribs and three sheet ribs. Aluminum-alloy stiffeners, diaphragms and a Z-member give strength to the structure. The top and bottom skins, and a trailing edge strip, are attached to the ribs.
The second support structure is immediately inboard of the aileron and gives support to the aileron and the outboard flap. It has two machined aluminum alloy ribs, a top shroud panel and two bottom access panels. A machined aluminum alloy track, with a steel liner, is attached to one rib. A roller bearing attached to the outboard flap goes into the track when the flaps are retracted.
The fixed trailing edge includes two support structures. One is adjacent to RIB9, at the kink position, and gives support to the inboard and outboard flaps. This, the flap support structure, has three machined ribs and three sheet ribs. Aluminum-alloy stiffeners, diaphragms and a Z-member give strength to the structure. The top and bottom skins, and a trailing edge strip, are attached to the ribs.
The second support structure is immediately inboard of the aileron and gives support to the aileron and the outboard flap. It has two machined aluminum alloy ribs, a top shroud panel and two bottom access panels. A machined aluminum alloy track, with a steel liner, is attached to one rib. A roller bearing attached to the outboard flap goes into the track when the flaps are retracted.
E. Access Panels
Access panels below the inboard and outboard flaps are made of carbon fiber. The panels above and below the aileron are also made of carbon fiber, and have a honeycomb core. The bottom access panel in the aileron support structure is made of glass reinforced plastic, with a honeycomb of NOVEX (Ref. AMM D/O 06-41-57-00).
Access panels below the inboard and outboard flaps are made of carbon fiber. The panels above and below the aileron are also made of carbon fiber, and have a honeycomb core. The bottom access panel in the aileron support structure is made of glass reinforced plastic, with a honeycomb of NOVEX (Ref. AMM D/O 06-41-57-00).
F. Attachments for Trailing Edge Devices and their Drive Mechanisms
The attachments for the trailing edge devices are aft of the mid and outer rear spar sections and the rear false spar. They are:
The attachments for the trailing edge devices are aft of the mid and outer rear spar sections and the rear false spar. They are:
The attachments for the trailing edge devices are aft of the mid and outer rear spar sections and the rear false spar. They are:
- the flap drive attachment brackets
- the aileron attachment brackets
- the spoiler hinge brackets and fittings.
The attachments for the trailing edge devices are aft of the mid and outer rear spar sections and the rear false spar. They are:
- the flap drive attachment brackets
- the aileron attachment brackets
- the spoiler hinge brackets and fittings.
(1) The flap beam and track assembly 2 supports and moves the outboard end of the inboard flap. The track 2 drive brackets and support brackets (all machined from aluminum alloy) are installed on the rear false spar.
The outboard flap is supported and moved by the flap beam and track assemblies 3 and 4. The track 3 and 4 drive brackets and support brackets are installed on the mid and outer rear spar sections.
A titanium alloy spring-plate, attached to the aft of the shroud panel, touches the outboard flap when it is retracted. Also, a roller bearing, attached to a machined rib, goes into a track on the flap end.
The outboard flap is supported and moved by the flap beam and track assemblies 3 and 4. The track 3 and 4 drive brackets and support brackets are installed on the mid and outer rear spar sections.
A titanium alloy spring-plate, attached to the aft of the shroud panel, touches the outboard flap when it is retracted. Also, a roller bearing, attached to a machined rib, goes into a track on the flap end.
(2) The aileron support structure has five machined aluminum-alloy 'A' frames attached to brackets on the rear spar. A tie-beam connects the three inboard 'A' frames. At the inboard end of the tie beam is a diagonal brace which is also connected to the rear spar. Two rails connect the outboard 'A' frames and diaphragms to RIB27. The diaphragms are attached to brackets on the rear spar.
(3) The spoiler hinge brackets and fittings are machined from aluminum alloy.
Electrical and hydraulic systems are also installed in the fixed structure of the trailing edge. Machined aluminum alloy riblets are attached to the rear spar. They give support to the wing systems, to the top skin panels and the bottom access panels.
Electrical and hydraulic systems are also installed in the fixed structure of the trailing edge. Machined aluminum alloy riblets are attached to the rear spar. They give support to the wing systems, to the top skin panels and the bottom access panels.
(4) The flap beam and track assembly 2 supports and moves the outboard end of the inboard flap. The track 2 drive brackets and support brackets (all machined from aluminum alloy) are installed on the rear false spar.
The outboard flap is supported and moved by the flap beam and track assemblies 3 and 4. The track 3 and 4 drive brackets and support brackets are installed on the mid and outer rear spar sections.
A titanium alloy spring-plate, attached to the aft of the shroud panel, touches the outboard flap when it is retracted.
The outboard flap is supported and moved by the flap beam and track assemblies 3 and 4. The track 3 and 4 drive brackets and support brackets are installed on the mid and outer rear spar sections.
A titanium alloy spring-plate, attached to the aft of the shroud panel, touches the outboard flap when it is retracted.
(5) The aileron support structure has five machined aluminum-alloy 'A' frames attached to brackets on the rear spar. A tie-beam connects the three inboard 'A' frames. At the inboard end of the tie beam is a diagonal brace which is also connected to the rear spar. Two rails connect the outboard 'A' frames and diaphragms to RIB27. The diaphragms are attached to brackets on the rear spar.
(6) The spoiler hinge brackets and fittings are machined from aluminum alloy.
Electrical and hydraulic systems are also installed in the fixed structure of the trailing edge. Machined aluminum alloy riblets are attached to the rear spar. They give support to the wing systems, to the top skin panels and the bottom access panels.
Electrical and hydraulic systems are also installed in the fixed structure of the trailing edge. Machined aluminum alloy riblets are attached to the rear spar. They give support to the wing systems, to the top skin panels and the bottom access panels.
G. Flap Beam and Track 1
H. Flap Beam and Track 1
The flap beam and track 1 is attached at three positions:
The flap beam and track is a titanium assembly, with a machined roller track at each side. A flap actuating lever at the forward end of the beam has a limit stop. An end plate at the rear end of the beam is the limit stop for the flap carriage.
The flap beam and track 1 is attached at two positions:
The flap beam and track is a titanium assembly, with a machined roller track at each side. A flap actuating lever at the forward end of the beam has a limit stop. A bush assembly at the rear end of the beam is the limit stop for the flap carriage.
The flap beam and track 1 is attached at three positions:
- a forward attachment
- a center attachment (adjustable)
- a rear attachment.
The flap beam and track is a titanium assembly, with a machined roller track at each side. A flap actuating lever at the forward end of the beam has a limit stop. An end plate at the rear end of the beam is the limit stop for the flap carriage.
The flap beam and track 1 is attached at two positions:
- a forward attachment
- a rear attachment.
The flap beam and track is a titanium assembly, with a machined roller track at each side. A flap actuating lever at the forward end of the beam has a limit stop. A bush assembly at the rear end of the beam is the limit stop for the flap carriage.
I. Flap Beams and Tracks 2, 3 and 4
The flap beams and tracks 2, 3 and 4 are attached at two positions:
The flap beams and tracks 2, 3 and 4 are attached at two positions:
The flap beams and tracks 2, 3 and 4 are attached at two positions:
- a forward attachment
- a rear attachment.
The flap beams and tracks 2, 3 and 4 are attached at two positions:
- a forward attachment
- a rear attachment.
(1) Forward attachment
The forward attachment of each flap beam and track includes a pin which is installed in a bearing and the fail-safe spigot. Brackets attach the bearing and the fail-safe spigot to the bottom skin panel (Ref. AMM D/O 57-26-00-00).
The forward attachment of each flap beam and track includes a pin which is installed in a bearing and the fail-safe spigot. Brackets attach the bearing and the fail-safe spigot to the bottom skin panel (Ref. AMM D/O 57-26-00-00).
(2) Rear attachment
The rear attachment of each flap beam and track includes bolts, a spigot and a fail-safe spigot, that go through bearing pads on the bottom skin panel.
The flap beams and tracks 2, 3 and 4 are box-type assemblies. An aft top member, which is the flap carriage track, is machined from extruded titanium. The beams have titanium webs and stops, extruded-titanium angles and channels and a forged aluminum alloy flange. Aluminum alloy diaphragms and angles are installed between the webs.
The rear attachment of each flap beam and track includes bolts, a spigot and a fail-safe spigot, that go through bearing pads on the bottom skin panel.
The flap beams and tracks 2, 3 and 4 are box-type assemblies. An aft top member, which is the flap carriage track, is machined from extruded titanium. The beams have titanium webs and stops, extruded-titanium angles and channels and a forged aluminum alloy flange. Aluminum alloy diaphragms and angles are installed between the webs.
(3) Forward attachment
The forward attachment of each flap beam and track has a spigot and a failsafe pin. A bearing bracket, mounted on the wing bottom skin panel, holds the spigot. The failsafe pin connects a bracket mounted on the flap beam to a catching bracket on the bottom skin panel (Ref. AMM D/O 57-26-00-00).
The forward attachment of each flap beam and track has a spigot and a failsafe pin. A bearing bracket, mounted on the wing bottom skin panel, holds the spigot. The failsafe pin connects a bracket mounted on the flap beam to a catching bracket on the bottom skin panel (Ref. AMM D/O 57-26-00-00).
(4) Rear attachment
The rear attachment of each flap beam and track has a failsafe spigot and an aft spigot pin. These go through an outer bracket mounted on the wing bottom skin panel. Bolts and screws hold two bearing pads to the top face of the beam, and attach the beam to the outer bracket (Ref. AMM D/O 57-26-00-00).
The flap beams and tracks 2, 3 and 4 are box-type assemblies. An aft top member, which is the flap carriage track, is machined from extruded titanium. The beams have titanium webs and stops, extruded-titanium angles and channels and a forged aluminum alloy flange. Aluminum alloy diaphragms and angles are installed between the webs.
The rear attachment of each flap beam and track has a failsafe spigot and an aft spigot pin. These go through an outer bracket mounted on the wing bottom skin panel. Bolts and screws hold two bearing pads to the top face of the beam, and attach the beam to the outer bracket (Ref. AMM D/O 57-26-00-00).
The flap beams and tracks 2, 3 and 4 are box-type assemblies. An aft top member, which is the flap carriage track, is machined from extruded titanium. The beams have titanium webs and stops, extruded-titanium angles and channels and a forged aluminum alloy flange. Aluminum alloy diaphragms and angles are installed between the webs.