DOC AIRBUS | AMM A320FINBOARD FLAP - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The inboard flap is a fowler flap assembly. In its retracted position the inboard flap assembly is the wing trailing edge between the fuselage side and the outboard flap.
The spars, the ribs and the skin of the inboard flap are made of Carbon Fiber Reinforced Plastics (CFRP). The leading edge is made of honeycomb core with a skin made of CFRP. The trailing edge is made of honeycomb core with a skin made of aluminum sheet metal.
The inboard flap is a fowler flap with a tab on its trailing edge. In its retracted position the inboard flap assembly is the wing trailing edge between the fuselage side and the outboard flap.
The spars,the ribs and the skin of the inboard flap are made of aluminum. The nose of the tab is also made of aluminum. The trailing edge and the tab are made of honeycomb core with a skin made of aluminum sheet metal.
The drive strut assembly-track 1 attaches the inboard flap assembly to the carriage assembly-track 1. Two bolt connections attach the drive strut assembly-track 1 to the drive trunnion. A forked bolt assembly attaches the drive strut assembly-track 1 to the rotary actuator-track 1.
A spherical bearing attaches the drive trunnion to the carriage assembly-track The drive trunnion is a fail-safe part. The drive strut assembly is not a fail- safe part.
The drive strut assembly-track 1 attaches the inboard flap assembly to the carriage assembly-track 1. Two bolt connections attach the drive strut assembly-track 1 to the drive trunnion. A forked bolt assembly attaches the drive strut assembly-track 1 to the rotary actuator-track 1.
An eccentric spherical bearing attaches the drive trunnion to the carriage assembly-track 1. The drive trunnion is a fail-safe part.
Between RIB9 and RIB10 there is a bracket. The bracket is to attach the drive strut assembly-track 2. Bolts connect the drive strut assembly-track 2 to the bracket. Drive strut assembly-track 2 is a fail-safe-part.
A bracket at RIB9 attaches the carriage assembly-track 2 with an eccentric spherical bearing.
Three hoisting fittings are installed to lift the inboard flap.
Installed at each end of the inboard flap assembly there are adjustable seal assemblies.
At RIB10 there are two brackets. The brackets attach the drive strut assembly-track 2. Bolts connect the drive strut assembly-track 2 to the brackets. The drive strut assembly-track 2 is a fail-safe part.
A bracket at RIB9 attaches the carriage assembly-track 2 with an eccentric spherical bearing.
Three hoisting fittings are installed to lift the inboard flap.
At each end of the inboard flap assembly there are adjustable seal assemblies.
The tab of the inboard flap is operated by a linkage system which is installed at RIB3 and the track 2 station. The linkage system at RIB3 is attached to the shroud box and the tab. Drive rods operate via bellcranks the tab. At track 2 station there is a drive rod linked to the carriage.
The support system of the tab is installed at RIB6. It has brackets and rods which support the tab during the extension of the flap. Fairings at RIB3 and RIB6 cover the linkage and the support system.
At the outboard end of the flap there is an interconnection strut . It connects the inboard and the outboard flaps. In case of a drive station failure, the interconnection strut carries the loads which result from such failure.
The inboard flap is a fowler flap assembly. In its retracted position the inboard flap assembly is the wing trailing edge between the fuselage side and the outboard flap.
Inboard FlapThe spars, the ribs and the skin of the inboard flap are made of Carbon Fiber Reinforced Plastics (CFRP). The leading edge is made of honeycomb core with a skin made of CFRP. The trailing edge is made of honeycomb core with a skin made of aluminum sheet metal.
The inboard flap is a fowler flap with a tab on its trailing edge. In its retracted position the inboard flap assembly is the wing trailing edge between the fuselage side and the outboard flap.
The spars,the ribs and the skin of the inboard flap are made of aluminum. The nose of the tab is also made of aluminum. The trailing edge and the tab are made of honeycomb core with a skin made of aluminum sheet metal.
The drive strut assembly-track 1 attaches the inboard flap assembly to the carriage assembly-track 1. Two bolt connections attach the drive strut assembly-track 1 to the drive trunnion. A forked bolt assembly attaches the drive strut assembly-track 1 to the rotary actuator-track 1.
A spherical bearing attaches the drive trunnion to the carriage assembly-track The drive trunnion is a fail-safe part. The drive strut assembly is not a fail- safe part.
The drive strut assembly-track 1 attaches the inboard flap assembly to the carriage assembly-track 1. Two bolt connections attach the drive strut assembly-track 1 to the drive trunnion. A forked bolt assembly attaches the drive strut assembly-track 1 to the rotary actuator-track 1.
An eccentric spherical bearing attaches the drive trunnion to the carriage assembly-track 1. The drive trunnion is a fail-safe part.
Between RIB9 and RIB10 there is a bracket. The bracket is to attach the drive strut assembly-track 2. Bolts connect the drive strut assembly-track 2 to the bracket. Drive strut assembly-track 2 is a fail-safe-part.
A bracket at RIB9 attaches the carriage assembly-track 2 with an eccentric spherical bearing.
Three hoisting fittings are installed to lift the inboard flap.
Installed at each end of the inboard flap assembly there are adjustable seal assemblies.
At RIB10 there are two brackets. The brackets attach the drive strut assembly-track 2. Bolts connect the drive strut assembly-track 2 to the brackets. The drive strut assembly-track 2 is a fail-safe part.
A bracket at RIB9 attaches the carriage assembly-track 2 with an eccentric spherical bearing.
Three hoisting fittings are installed to lift the inboard flap.
At each end of the inboard flap assembly there are adjustable seal assemblies.
The tab of the inboard flap is operated by a linkage system which is installed at RIB3 and the track 2 station. The linkage system at RIB3 is attached to the shroud box and the tab. Drive rods operate via bellcranks the tab. At track 2 station there is a drive rod linked to the carriage.
The support system of the tab is installed at RIB6. It has brackets and rods which support the tab during the extension of the flap. Fairings at RIB3 and RIB6 cover the linkage and the support system.
At the outboard end of the flap there is an interconnection strut . It connects the inboard and the outboard flaps. In case of a drive station failure, the interconnection strut carries the loads which result from such failure.