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AAC INTERIORS DESIGN

1.

Create 3D models of Shell assemblies

2.

Create 3D models and production drawings of the assemblies, component installation & the assembly installation of the monuments

3.

Create surface models of the Power seats at the conceptual stage free hand styling.

4.

Create Finite Element model with the loads and boundary conditions.

5.

Perform Analysis of the Finite Element Model to get the stresses, reaction forces and displacements.

6.

Perform Hand Calculations.

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1. FLOOR SCHEMATIC: •

Final approved drawing after the mutual agreement between the Interiors Design team and the end Customer.

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It is Plan view of the entire aircraft showing the monuments locations in different zones.

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2. ELEVATION DRAWINGS: •

It is elaborated drawing of floor schematic with each zone having plan view of the zone and different sectional views showing the overall dimensions and locations of the monuments.

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It also gives the information of the materials and vendors for the component manufacturing.

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It is elaborated drawing of floor schematic.

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3. SHELL MODELS FOR STRESS ANALYSIS: •

Shell is the basic structure which carries loads.

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It is assembly of panels which are honey combed structured. The material could be aluminium or Nomex.

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Create 3D model of the monuments using the given Floor Schematic and Elevation Drawings

SIDELEDGE

BULKHEAD

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VANITY

CABINET

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CAD LAYOUT

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ACTUAL FABRICATED SHELL ASSEMBLIES AT AAC

Example Shell Structure: Toilet Shroud

Example Shell Structure: Cabinet

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4. Assembly creation: •

It is assembly of the shell, doors (wherever applicable), access panels (wherever applicable) & the necessary hardware, hinges & latches.

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The drawing is the output which is required for the manufacturing and fabrication. Door hinges

Door lid Support

Door Latches

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5. COMPONENT INSTALLATION: •

It is installation of the components to the assembly model.

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Components could be oxygen module, Snake/flex lights, reading lights, wash lights.

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The output is the drawing which gives the detailed instruction of each component installation. Oxygen Module Overhead-Cabinet Assy.

Circuit-Breaker Panel Lights

Reading Lights

Snake Lights

Air-Gaspers

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5. INSTALLATION: •

It is installation of the total assembly with its components installed into the aircraft structure.

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This requires standard parts like tie-rods, fittings, insert-screw & floor attachments. STRINGERS

FRAMES

BULIKHEAD

FLOOR OVERHEAD-CABINET SOLIDWORKS 3D-MODEL OF OVERHEAD CABINET INSTL PRODUCT

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Support from adjacent structure using panel attachment

Support from aircraft structure using Tie-Rod

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POWER SEAT Free hand sketch at conceptual stage

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BBJ-1 S-357 power seat back shell Back shell is created from the conceptual free hand sketch to surface model

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SIDE LEDGE

OTTOMAN

ASSEMBLY

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FINITE ELEMENT MODEL

OTTOMAN-SIDELEDGE ASSEMBLY GALLEY

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FINITE ELEMENT ANALYSIS OF BULK HEAD

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DISPLACEMENT CONTOUR OF BULK HEAD

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HAND CALCULATIONS

Hand Calculations of pin to get the Moment and Margin of Safety

Check Pin The pin is heat treated to Ftu = 160 ksi and has the diameter of 0.312in. The longest moment arm of the two pins is used for analysis.Figure – Bolt Bending Single shear allowable = 7,290 lbs t1 = 0.08 in t2 = 0.48 in g = = 0.20 in b = = 0.36 in Moment = 92,565 psi M.S. (bolt bending) = = +0.29

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HAND CALCULATIONS –FITTING ATTACHMENT Hand Calculations of pin to get shear load and Margin of Safety

Pin shear allowable = 2005 lbs Pin tensile allowable = 1940 lbs Collar tensile allowable = 1400 lbs Shear load = 503.4 lbs M.S.(pin shear load) = = +1.99

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