seat track fittings

e-mug Technologies Pvt. Ltd, Aerospace Division - DEDC for B/E Aerospace Inc.,


EOS

QANTAS KINGFISHER

EMIRATES


ASSY, SCREEN TRACK

ELECTRICAL, COVER PLATE

PADS

ASSY, SUITE PALLET

FITTING FLANGES

e-mug Technologies Pvt. Ltd, Aerospace Division - DEDC for B/E Aerospace Inc.,Aft (+X)

RHS (+Y)

Up (+Z)

1 2 3

4 5 6

7 8 9

11 12 13

17

Suite 1F Pallet Suite 2F PalletAft Bulkhead

10


SELF LOCKING NUT

WASHER

BUSHING ECCENTRIC SMALL

BUSHING ECCENTRICLARGE

FITTING FLANE

WASHER LARGE OD

SHEAR RETAINER

STUD

3PAG0001001

3PAG0003001

3PAG0002001

61311-22-14

61315-03

NAS970-6

NAS1149F0632P

MS21042


Seat track and

Seat track Fitting Assy


EOSQANTAS

KINGFISHER EMIRATES


X DIRECTION X and Y DIRECTIONS

X ,Y and Z - DIRECTIONS

EOSQANTAS and EMIRATES

KINGFISHER


Introduction of Z adjustment to seat track fittingsin

Emirates


Air craft floor


No adjustment of the sliding screens was designed in, providing adjustment only provides the opportunity to get it wrong .

The philosophy was that the pallet at 1.04 thick aluminum skinned honeycomb panel and the track extrusion would maintain straightness.

Keeping the screen gap parallel The large gusset and the vanity shelf would keep the aft and forward stationary

panel perpendicular to the wardrobes maintaining alignment Keeping the screens aligned

Neither Boeing nor Airbus have requirements for Z adjustment Introduction of Z adjustment will allow some adjustment of the screen alignment

Vanity Table not square It has been recognized that the Vanity Table end is not truly square.

The engineering tolerance and manufacturing methods (composite part) do mean that a angle tolerance of +/- .5 degree have been noted.

This generally results in a wardrobe to fwd stationary panel angle greater than 90 degrees.


Results Terminology There are effectively 3 results that have been identified with

regard to the Sliding Screen alignment and gap.

1. Screen Alignment where the top area of the Sliding Screens are offset to each other, where this has been considered a problem it is generally the forward screen that is more outward of the suite than the aft sliding screen, in line with the vanity edge being greater than 90 degrees.

2. Screen Gap Not Parallel Where the Sliding Screens may be touching at either the bottom or the top and there is a gap at the other end, where this has been considered a problem it is generally the bottom that is touching and the top has a gap, up to .20 inches.

3. Screen Non Consistent Gap Where a non consistent gap over length of the sliding sliding where maybe the Sliding Screens touch top and bottom but not in the middle. This is not a problem that is addressed here as it relates to the Sliding Screen detail assemblies and not the installation alignment.

1. Screen Alignment problems would

show here

2. Screen Gap Not Parallel

problems would show here

Sliding Screen Adjustment Status


To address the Installation Alignment and Parallel Gap issues B/E has considered a Z adjustment Seat Track Fitting

Simple Z adjustment washers where considered but to assist with Installation adjustment from above the suite pallets was considered necessary

A Z adjustment fitting was therefore developed, An early prototype was reviewed and further adjustments made.

Note all fittings within the B777 and A380 mini suites can not be reached to access adjustment.

Introduction of threaded collar to

provide Z adjustment




The Theory Related to Fwd Sliding Screen

Rotating fitting A + E clockwise will provide X+ve

Rotating fitting A clockwise will provide V+ve Rotating fitting E clockwise will provide V-ve

The same can be said for the Aft Sliding Screen however as the B777 generally does not have fitting D & H, it is hoped that through trials only forward fitting adjustment will be required and the aft sliding screen with the large machined gusset can act as the target.

Expectations Non Linear movements of the Sliding Screens will result

from adjustment of the new fittings due to other parts of the suite creating complex adjustment characteristics.

Concerns Negative knock on effects could result including

Misalignment of Wardrobe door Sliding Screen mechanism become less smooth Reduced clearance with seat

E F G H

A B C D

Plan View on Typical Pallet

FWD

Not applicable to B777 AircraftNot applicable

to B777 Aircraft

Side View on Sliding Screen

V+ve W+ve

X+ve Y+ve


Aft Screen

Aft Stationary Panel

supported at 90 degrees by

large machined

gusset located behind close

out

B777 Static Test Unit module parts have been collated and reassembled for

adjustment review2A suite utilized as shown



FWD

Looking at aisle side of SuiteThis

Position fully

locked down

Looking at outboard side of Suite

This Position fully locked

down

FWDNote Marks

made at effective Zero

position



In setting up to begin experiment measurement positions considered

3 positioned of measurement taken Top Providing data on

inboard/outboard adjustment of the forward sliding screen

Middle towards the top of the sliding screen, providing data on gap between sliding screens at top

Bottom towards the bottom of the sliding screens, providing data on the gap between sliding screens at the bottom

Using Middle and Bottom results parallelism of screens can be considered, key in keeping screens aligned


Top

Middle

Bottom


In process views taken Maintaining aft screen as target and via Z

adjustment fwd screen movement shown towards aisle and towards suite

Max towards aisle from zero = 0.279 Max towards suite from zero = 0.437

Each movement viewed to ensure no binding

- When testing initiated on position B screens caught up on each other after 1.5 turns of B

Movement of forward screen towards suite

binding up on aft screen edge cap

Test restarted

FWD

FWD



Results Legend and Results Suite raised at position A only

Good movement on screen alignment Towards Aisle

Little movement on screen parallelismD C B

AE

2A Tested Suite



Conclusions The use of adjustable Z fittings will allow adjustment of both screen alignment

and parallelism The results show consistency and are thought to be predictable across

individual suites

Although multiple suites may skew results and installation adjustment directions will need to consider multiple in line suites

The results have produced a wide enough adjustment range to conclude that further methods of adjustment should not be considered

Next steps Introduction of Z adjustment fittings will require Static testing and substantiation

to allow fitment to already certified product types (B777 and A380) Earliest opportunity via static testing for Boeing MC on B777 program

Introduce Z adjustment fittings into A345 program, commercial implications to be considered



X and Y DIRECTIONSX ,Y and Z DIRECTIONS QANTASKINGFISHER


TOOL USED FOR ROTATE THE INNER BUSHING.

TO LIFT IN Z-DIRECTION

seat track fittings

Documents

aerospace division dedc

sliding screen alignment

screen gap

aft sliding screen

forward screen

screen trackelectrical

screen alignment vanity

sliding screens