Patent ID: 9108718
Filing Date: 2015-08-18
Classification: B32B,B64C,Y02T,Y10T

Abstract:
1. An aircraft main wing including a composite structure forming a bottom surface skin, the composite-material structure comprising: a holed structural member that is a composite material made of fiber reinforced plastic, the holed structural member extending in a longitudinal direction and having at least one hole formed therein; and an adjacent structural member that is a composite material made of fiber reinforced plastic, the adjacent structural member extending in the longitudinal direction and being connected to a side portion of the holed structural member, wherein the holed structural member and the adjacent structural member are configured to receive a tensile load and/or a compressive load in the longitudinal direction, wherein a tensile rigidity and/or a compressive rigidity of the holed structural member in the longitudinal direction are/is lower than a tensile rigidity and/or a compressive rigidity of the adjacent structural member in the longitudinal direction, and wherein the holed structural member and the adjacent structural member are connected at division surfaces that extend in the longitudinal direction, and, the hole is an access hole.