| 摘要 |
A pneumatic radial ply tire 100 for use on aircraft has a radial reinforced carcass 20 having at least one axially inner ply 2 A, 2 B, 2 C and 2 D of textile cords 21 wound around a pair of bead cores 33 . The improved bead structure 30 has a flipper 50 having an axially inner leg L<SUB>I </SUB>and axially outer leg L<SUB>E</SUB>. The ends L<SUB>I</SUB>, L<SUB>E </SUB>of the flippers 50 are above the bead core height B<SUB>h </SUB>and below the apex A of an elastomeric strip 40 satisfying the relation B<SUB>h</SUB><L<SUB>E</SUB><0.7D AND B<SUB>h</SUB><L<SUB>I</SUB><0.7D. Additionally, the tire carcass 20 has at least one axially outer ply 2 E, 2 F of textile cords 21 extending from bead 30 to bead 30 along the turn-ups 20 A, 20 B, 20 C and 20 D of the axially inner plies 2 A, 2 B, 2 C and 2 D. The plies 21 are closely spaced along the natural ply path.
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