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A380 WING RIB BOOM

FINAL FIX / RETROFITGeneral Introduction

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RIBS SUBJECT RETROFIT SB

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• A380

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RIBS SUBJECT RETROFIT SB

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• A380

RIB 3

RIB 1

1 AFT

RIB 1

2 FW

D & A

FT

RIB 1

4 FW

D & A

FT

RIB 1

5 FW

D & A

FT

RIB 1

7 AFT

RIB 1

8

RIB 1

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RIB 2

0

RIB 2

1RIB 2

4

RIB 2

5

RIB 2

6

RIB 2

7

RIB 2

9

RIB 3

0

RIB 3

6

RIB 3

7

RIB 3

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RIB 3

9

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RIB BOOM MODIFICATIONS

•Change material from 7449 to 7010.

• Increased foot thickness.

•Enlarge flange of the boom.

•Interference fit on skin riveting.

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• A380

CFRP Rib Web

Rib Foot Boom

Stringer

Skin

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RIB BOOM MODIFICATIONS

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Enlarged Boom Flange

Existing Boom New Boom

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CHANGES PRINCIPLES

Enlarged Rib Flanges – Eg. Rib 24

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• A380

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RIB WEB MODIFICATIONS Rib Web Additional Stiffeners

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New stiffeners added

Add riveted stiffener and shim • New Stringers and shims to be installed on Rib webs to improve their out of plane behaviour.- 2 kinds of changes can be identified depending on rib concerned:

. Prolongation of existing stiffeners,

. New stiffeners

NEW STIFFENERS

EXISTING STIFFENERS EXTENSION

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CHANGES PRINCIPLES Prolongation of existing stiffeners - General

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• A new L profile stiffener to enlarge the existing one. Part is riveted to web rib and existing stiffener

• Ribs concerned by this change: R11F, R12A, R12F, R14F, R15A, R15F, R27

R11F, R12A, R12F, R14F, R15A, R15F, R27

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CHANGES PRINCIPLES Prolongation of existing stiffeners - Details

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Existing Vertical Stiffeners

Stiffener extension to be InstalledShim to be Installed when Required

Existing Stiffener

C-C B-B

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CHANGES PRINCIPLES New Stiffeners Added

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• Ribs concerned by this change: R17A, R19, R20, R21, R24, R25, R26, R27, R29

• A new Stiffener is installed above and below manhole.

NOTE: Rivet Stiffeners below manhole of ribs 19,and 27 are replaced by a new one.

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CHANGES PRINCIPLES New Stiffeners Added

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• Ribs concerned by this change: R17A, R19, R20, R21, R24, R25, R26, R27, R29

• A new Striffener is intalled above and below manhole.NOTE: Stiffener below manhole of ribs 19, 20, 21 and 27 are replaced by a new one.

New stringer to be installed Shim to be installed if required

E

E

D

D

D-D E-E

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CHANGES PRINCIPLES

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Stiffeners Extension – General

11F, 12F

14F

12A

15F15A

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CHANGES PRINCIPLES

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Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 11F

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CHANGES PRINCIPLES

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Stiffeners Extension – Fastener installation – e.g Ribs 11F

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CHANGES PRINCIPLES

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New Stiffeners Added – General

ZONE B

R19, R20,R21, R26, R25, R27

R17A

R24

R29

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CHANGES PRINCIPLES

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ZONE B

ZONE B

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

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ZONE B

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

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ZONE B

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

T

ZONE B

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

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ZONE B

ZONE B

4 56 7

4 Inner Face 5 Inner Face

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

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ZONE B

ZONE B

4 56 7

4 Outer Face 5 Outer Face

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

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ZONE B

ZONE B

4 56 7

6 Inner Face 7 Inner Face

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

T

ZONE B

ZONE B

4 56 7

6 Outer Face 7 Outer Face

Stiffeners Extension – Position / Adjustment Principle – e.g Ribs 26

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CHANGES PRINCIPLES

T

ZONE B

ZONE B

Stiffeners Extension – Fastener Installation – e.g Ribs 26

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CHANGES PRINCIPLES

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New Stiffeners Added – Fasteners Installation

Extension of existing stiffeners

New Stiffener

AA

E

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CHANGES PRINCIPLES

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New Stiffeners Added – Fasteners Installation

C-C

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CHANGES PRINCIPLES

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New Stiffeners Added – Fasteners Installation

AA

E

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