| 摘要 |
PROBLEM TO BE SOLVED: To provide a wing structure of an aircraft capable of enhancing the buckling strength of a rib against the shear load applied to a wing of the aircraft. SOLUTION: When stringer through holes 21c, 21d allowing stringers 19a, 20a of upper and lower skins 19, 20 to pass therethrough are formed in upper and lower edges of a rib 21 for connecting a main spar 13 and a front spar 14, the buckling strength of the rib 21 against the shear load attributable to the lift and the drag of the wing is degraded by the stringer through holes 21c, 21d, a box structure comprising the spars 13, 14, the skins 19, 20 and the rib 21 of the wing is deflected, and accordingly, the shape of the wing may be possibly changed. However, by forming a bead 23 extending in the direction of connecting the upper and lower stringer through holes 21c, 21d on the rib 21, and forming upper and lower ends of the bead 23 in an arc shape so as to surround the upper and lower stringer through holes 21c, 21d, the buckling strength of the rib 21 against the shear load is effectively enhanced, and deformation of the wing can be suppressed. COPYRIGHT: (C)2008,JPO&INPIT
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