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Tire crown for an airplane

A technology for aircraft tires and tires, applied in aircraft tires, tire treads/tread patterns, tire parts, etc., can solve problems such as insufficient reduction of irregular tread wear, and achieve extended life and increased wear area. Effect

Active Publication Date: 2011-05-25
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] However, the solutions proposed in the aforementioned prior art are still insufficient to reduce the irregular wear of the treads of tires fitted to airliners, where these tires are exposed to enormous stresses, such as, as a non-limiting example, greater than 15 bar Rated pressure, rated load greater than 20 metric tons and a maximum speed of 360km / h

Method used

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  • Tire crown for an airplane
  • Tire crown for an airplane

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Embodiment Construction

[0089] figure 1 The initial meridian profile (radially outermost portion) of the tread surface 1 is shown. Central point C of the central portion of the initial meridian profile of the tread surface 1 1 (located on the equatorial plane indicated by the axis ZZ' in the meridian plane) at a radial distance d measured from the axis of rotation YY' of the tire 1 place. Point E of the initial meridian profile of the tread surface 1 1 and E' 1 (which is symmetric with respect to the equatorial plane and whose radial distance is D 1 ) are the end points of the central portion of the initial meridian profile of the tread surface 1 and are axially separated by an axial width l 2 , the initial meridian profile of the crown reinforcement 2 is locally concave across this axial width l 2 . exist figure 1 In , the initial meridian profile of the tread surface 1 is convex.

[0090] Radially inside the initial meridian profile of the tread surface 1 is the initial meridian profile ...

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Abstract

The invention relates to an airplane tire, the nominal pressure of which is greater than 9 bars and the sag of which, under a nominal load, is greater than 30%, including a tread having: a rolling surface (41); a crown reinforcement (42), including at least one layer of reinforcing elements; and a carcass reinforcement (43) including at least one layer of reinforcing elements, said rolling surface (41), crown reinforcement (42), and carcass reinforcement (43) being geometrically defined, respectively, by initial meridian profiles. According to the invention, the initial meridian profile of the crown reinforcement (42) is locally concave on a medial portion having an axial width I42 at least equal to 0.25 times the axial width L42 of the crown reinforcement.

Description

technical field [0001] The invention relates to aircraft tires whose use is characterized by high pressure, high load and high speed conditions, in particular whose rated pressure exceeds 9 bar and whose deflection under rated load exceeds 30%. Background technique [0002] By definition, the deflection of a tire under rated load is its radial deformation, or the relative change in radial height, the latter being never loaded under the rated conditions of pressure and load defined by the Tire and Rim Association standards The inflated state of the static load is changed to the inflated state of the static load. It is defined as the ratio of the change in radial height of the tire to half the difference between the outside diameter of the tire and the largest diameter of the rim measured at the rim. The tire outer diameter is measured statically in an inflated, unloaded state at rated pressure. [0003] In the text herein, the following terms have the meanings indicated her...

Claims

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Application Information

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IPC IPC(8): B60C9/20
CPCB60C2200/02B60C11/0083B60C9/20
Inventor F·尚布里亚S·莫拉纳-博菲斯
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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