michelin proprietary iberia “near zero growth” radial tyres application on a340-600 october 2002

Michelin Proprietary

IBERIA

“Near Zero Growth” Radial TyresApplication on A340-600

October 2002


“NZG” TECHNOLOGY

What is NZG ??

Our R&D Efforts have developed a new Reinforcing Material :

Higher Modulus than Nylon(Growth limited to less than 3%)

Modulus stable with temperature (Maintains geometry at high temperature)


0 5 10 15 20

Elongation (%)

Force

NEW CORD

NYLON CORD

Working Point when Tyre Inflated at nominal pressure

“NZG” Casing and Belt Plies are made of high tensile cords



“NZG” TECHNOLOGY “NZG” TECHNOLOGY

Bias

Radial nylon

Radial NZG

Bias/ Radial/ NZG Radial Construction



Inflation+ 8 % diameter

Centrifugal force+ 4% diameter

Centrifugal force+ 2% diameter

Inflation+ 6 % diameter

Centrifugal force+ 1 % diameterInflation+ 2 % diameter

Tyre growing : Bias / Radial/ NZG RadialTyre growing : Bias / Radial/ NZG Radial



Non inflated tyre : Nylon vs NZG Comparison

For a given inflated diameter, because NZG grows less,its non-inflated diameter is larger


Tyre weight can be adjusted to optimize performance.

NZG tyre is up to 15 % lighter than equivalent Michelin radial nylon tyre. While often keeping a deep skid for optimum landings per tread.Lower moment of inertia produces less wear at touch down.




NZG design features

NZG structure grows less than nylon. (non inflated tyre size 5 cm larger than equivalent nylon tyre )

Squared and balanced footprint

Ability to resist FOD / tyre survivability.


NZG structure Reduced Elongation..

Better resistance to abrasion for optimum landings per tread and reduced maintenance.

Better resistance to tear and cuts for a reduction of early removals and increased average landings per tread.

Better tread and sidewall resistance to ozone attack & aging.




Test on trailer in Almeria - Low speed

“ NZG” FOD Resistance Demonstration


Bias/NZG Tyre Test at 20 km/h in Almeria

Bias/NZG Tyre Test at 20 km/h in Almeria

“NZG” TECHNOLOGYFOD resistance of Bias/NZG Radial

BIAS

NZG


“NZG” TECHNOLOGY“ NZG” FOD Resistance Demonstration High speed test on dynamometerin Ladoux


“NZG” TECHNOLOGY “NZG” TECHNOLOGYFOD Resistance Demonstration

After roll on blade at 324 km/h

Bias Tyre blow out after roll on blade

NZG Tread band cut, no pressure loss, no debrisThen, completes 3 cycle test (no pressure loss, no debris)i.e 2 (taxi + take-off + landing + taxi) + 1 (taxi + overload continued take-off + landing + taxi)

BIAS

NZG radial


FOD Resistance Demonstration NZG - After roll on blade at 383 km/h

FOD Resistance Demonstration NZG - After roll on blade at 383 km/h


NZG “damaged” tyre

Then successfully completed 3 mission cycle tests according to Concorde specification.


“NZG” TECHNOLOGYCurrent experience :Fully certified on ConcordeFully certified on Falcon 2000, Falcon 20/50 (MLG)Certification in progress on Falcon 900 (MLG)Certification in progress on A340-600 (MLG)Certification in progress on A320 (NLG)Selected on Falcon 2000EX (MLG)Selected on Cessna Sovereign (MLG)

Proposed on Cessna Citation X (MLG)Proposed on Falcon F7XProposed on F16 Block 40Proposed on A380In Progress on Airbus A320 NLG


A340-500/-600 A340-500/-600Currently certified with Michelin radial nylon tyres.

Tyre Size 1400x530R23 45x18.0R17

Ply rating 40 36

Speed rating 235 mph 235 mph

Part Number M16001-04 M14001-01

Skid depth .43 in .44 in.44 in

Nb of grooves 4 44

Avg weight 135.0 Kg (297.6 lbs) 79.0 Kg .0 Kg (174.2 lbs)(174.2 lbs)

Estimated LPT 220 240240

Expected Max R level R3 R3R3


A340-500/-600 A340-500/-600

Certification of our NZG tyre.

A 1400x530R23 NZG tyre has been proposed within theA340-500/-600 program.

It is expected to certified by the end of 2002.

Then, it will become the new standard tyre for A340-500/-600 original equipment


A340-500/-600 A340-500/-600NZG tyre / Nylon tyre comparison.

NYLON NZG

Part Number M16001-04 tbd

Skid depth .43 in .47 in

Nb of grooves 4 4

Avg weight 135.0 Kg (297.6 lbs) 118.0 Kg (260.1 lbs)

Estimated LPT 220 265

Expected Max R level R3 R3


A340-500/-600 A340-500/-600NZG tyre / Nylon tyre comparison.

NZG Nylon

michelin proprietary iberia “near zero growth” radial tyres application on a340-600 october 2002

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