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

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IBERIA

“Near Zero Growth” Radial TyresApplication on A340-600

October 2002

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“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)

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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

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“NZG” TECHNOLOGY “NZG” TECHNOLOGY

Bias

Radial nylon

Radial NZG

Bias/ Radial/ NZG Radial Construction

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“NZG” TECHNOLOGY “NZG” TECHNOLOGY

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

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“NZG” TECHNOLOGY “NZG” TECHNOLOGY

Non inflated tyre : Nylon vs NZG Comparison

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

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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” TECHNOLOGY

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“NZG” TECHNOLOGY

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.

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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.

“NZG” TECHNOLOGY

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“NZG” TECHNOLOGY

Test on trailer in Almeria - Low speed

“ NZG” FOD Resistance Demonstration

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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

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

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“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

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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” TECHNOLOGY

NZG “damaged” tyre

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

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“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

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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

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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

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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

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

NZG Nylon