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Carcass reinforcement for an aircraft tyre

A technology for aircraft tires and crown reinforcements, applied to aircraft tires, reinforcement layers of pneumatic tires, tire components, etc., can solve problems such as fatigue failure of reinforcement components, tire degradation, etc., and reduce the risk of fatigue failure and compression level Reduced effect

Active Publication Date: 2015-01-07
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This compressive load may cause fatigue failure of the reinforcing elements and thus premature tire degradation

Method used

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  • Carcass reinforcement for an aircraft tyre

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 Not drawn to scale. Not all elements need to be shown. In particular, it is not necessary to mention all ends of the carcass layers.

[0047] figure 1 A meridian cross-section of a tire 1 according to the invention mounted on a mounting rim 4 is shown in the region of the sidewalls 2 and beads 3 .

[0048] The carcass reinforcement comprises a plurality of carcass layers distributed between a first group of carcass layers (51) and a second group of carcass layers (52).

[0049] The first group consists of two carcass layers (51) wound within each bead (3) around the bead wires (6) from the inside of the tire towards the outside, forming the bead (511), the end (E 1 ) is located radially outside the radially outermost point (E) of the bead wire (6). The bead (511) is the end (E 1 ), the radially innermost point of said carcass layer coincides directly with the radially innermost point (I) of the bead wire (6). The carcass layer (51 ) of the first group i...

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PUM

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Abstract

The invention concerns an improvement in the endurance of the carcass reinforcement (5) of an aircraft tyre (1), in the bending zone of the bead (3) on the rim (4). This tyre comprises a carcass reinforcement (5) having two families of layers (51 and 52) extending between the two beads, the first family comprising at least one layer which winds, from the inside to the outside of the tyre, around a rod (6), the free end (E1) of the turn-up (511) being radially outside the radially outermost point (E) of the rod, the second family comprising at least two layers extending, in each bead (3), from the outside to the inside of the tyre, to the respective ends (E2) of same radially inside an axial line (DY) passing through the centre (O) of the rod and axially inside a radial line (Dz) passing through the centre of the rod at an axial distance (d2) at least equal to 5 mm. The carcass layers (52) of the second family are axially inside at least one turn-up (511).

Description

technical field [0001] The invention relates to an aircraft tire, the application of which is characterized by high pressure, load and speed conditions. Background technique [0002] Aircraft tires need to meet more specifically requirements for wear resistance and durability. Durability means the ability of a tire to resist over time the cyclic stresses to which it is subjected. When the tread of a tire wears down, which marks the end of the first useful life, the tire is retreaded, ie the worn tread is replaced with a new tread to allow a second working life. Improved wear resistance means a higher number of landings per service life can be achieved. Improved durability means an increase in the number of working lives that the same tire can have. [0003] As a rule, a tire comprises a tread intended to come into contact with the ground via the tread surface and connected by two sidewalls to two beads intended to provide a connection between the tire and the rim on which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C15/00B60C15/06D07B1/02
CPCB60C2200/02B60C15/0072B60C15/0009B60C15/0018B60C2009/0466B60C15/0632B60C9/0042B60C2009/0092
Inventor C·卡福A·布尔森
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN