| 摘要 |
PURPOSE: An aircraft tire having radial ribs is provided to prevent a tread of an aircraft tire from being stripped off by the impact in leaving/landing the ground as well as at the high velocity and load by mounting radial ribs on the tread of the tire. CONSTITUTION: To prevent a tread from being stripped off in leaving/landing the ground, each rib(1,2,3) has different curvature radiuses(R1,R2,R3) on the tread of a tire. The Y coordinate of a spot(D1) between the border line of the central rib(1) and the extending line from the side of a neighboring groove(G1) is the same as the Y coordinate of a spot(D2) between the border line of the mid rib(2) and the extending line from the other side. Each Y coordinate of a spot(D3) on the other side of the mid rib, and a spot(D4) related to the shoulder rib(3) is set lower than the two spots(D1,D2). Therefore, each rib is grounded respectively without regard to the side curvature radius of the tire for the curvature radiuses of each rib are set different from each other.
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