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Published byArthur Barnett Modified over 9 years ago
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Michelin Proprietary IBERIA “Near Zero Growth” Radial Tyres Application on A340-600 October 2002
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Michelin Proprietary “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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Michelin Proprietary 05101520 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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Michelin Proprietary “NZG” TECHNOLOGY Bias Radial nylon Radial NZG Bias/ Radial/ NZG Radial Construction
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Michelin Proprietary “NZG” TECHNOLOGY Inflation + 8 % diameter Centrifugal force + 4% diameter Centrifugal force + 2% diameter Inflation + 6 % diameter Centrifugal force + 1 % diameter Inflation + 2 % diameter Tyre growing : Bias / Radial/ NZG Radial
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Michelin Proprietary “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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Michelin Proprietary 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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Michelin Proprietary “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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Michelin Proprietary. 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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Michelin Proprietary “NZG” TECHNOLOGY Test on trailer in Almeria - Low speed “ NZG” FOD Resistance Demonstration
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Michelin Proprietary Bias/NZG Tyre Test at 20 km/h in Almeria “NZG” TECHNOLOGY FOD resistance of Bias/NZG Radial BIAS NZG
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Michelin Proprietary “NZG” TECHNOLOGY “ NZG” FOD Resistance Demonstration High speed test on dynamometer in Ladoux
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Michelin Proprietary “NZG” TECHNOLOGY FOD 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 debris Then, 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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Michelin Proprietary 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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Michelin Proprietary “NZG” TECHNOLOGY Current experience : Fully certified on Concorde Fully 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 F7X Proposed on F16 Block 40 Proposed on A380 In Progress on Airbus A320 NLG
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Michelin Proprietary A340-500/-600 Currently certified with Michelin radial nylon tyres. Tyre Size1400x530R2345x18.0R17 Ply rating4036 Speed rating235 mph235 mph Part NumberM16001-04M14001-01.44 in Skid depth.43 in.44 in 4 Nb of grooves44.0 Kg (174.2 lbs) Avg weight 135.0 Kg (297.6 lbs) 79.0 Kg (174.2 lbs) 240 Estimated LPT220240 R3 Expected Max R level R3R3
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Michelin Proprietary A340-500/-600 Certification of our NZG tyre. A 1400x530R23 NZG tyre has been proposed within the A340-500/-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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Michelin Proprietary A340-500/-600 NZG tyre / Nylon tyre comparison. NYLONNZG Part NumberM16001-04tbd Skid depth.43 in.47 in Nb of grooves44 Avg weight 135.0 Kg (297.6 lbs) 118.0 Kg (260.1 lbs) Estimated LPT220265 Expected Max R level R3R3
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Michelin Proprietary A340-500/-600 NZG tyre / Nylon tyre comparison. NZG Nylon
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