| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic radial tire for aircraft capable of enhancing the durability of a bead part by preventing crack in a joint part of a rubber chafer. SOLUTION: The pneumatic radial tire for aircraft comprises a tread part 1, a pair of side wall parts 2, a pair of bead parts 3, a carcass 5, a rubber chafer 11, a side wall rubber 8, a first stiffener rubber 12, and a second stiffener rubber 13. The first stiffener rubber 12 is formed of a rubber of the hardness higher than that of the side wall rubber 8, and the second stiffener rubber 13 is formed of a rubber of hardness lower than that of the rubber chafer 11. An outer side surface in the tire width direction of the rubber chafer 11 is covered by the cover rubber 14 having a spirally winding structure of a rubber sheet. COPYRIGHT: (C)2009,JPO&INPIT
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