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US 9,168,702 B2Granted
Composite structural member
AssigneeAirbus Operations GmbH
InventorsMatthew Eli-Eli, David Brian, Enzo Cosentino, James Lloyd, Filipe Almeida, Christopher David Burleigh
Life of this patent
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Abstract
A method of manufacturing a composite structural member (1), comprising the step of laying up a stack of fiber reinforced laminate plies (12), wherein at least one of the plies is laid up as discrete first (13) and second ply (14) portions, and the fibers of the second portion (14) have a different characteristic from those of the first portion (13). Also, a composite structural member (1) manufactured according to the method.
Claims11
A method of manufacturing a composite longitudinal stringer having a run out region, the method comprising:
- laying up a stack of fiber reinforced laminate plies, wherein at least one of the reinforced laminate plies is laid up as discrete first and second ply portions, and fibers of the second ply portion have a different characteristic from fibers of the first ply portion, and
- wherein the second ply portion extends up to a longitudinal end of the stringer at the run out region and the first portion is disposed inboard of the longitudinal end in the stringer longitudinal direction, such that the stringer has a lower axial stiffness at the run out region compared with the remainder of the stringer due to the different characteristic of the fibers of the second ply portion.
Dependencies are inferred from the claim text.