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US 2014/0004299 A1Published application
Cellular structure for double curvature panel
AssigneeAxxion Technology B.V.
InventorWieger WIEGERSMA
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AssigneeAxxion Technology B.V.
InventorWieger WIEGERSMA
Estimating the term…
The present invention relates to a cellular core having, in an expanded state, a bonding surface area suitable for sandwich type construction, wherein the cellular core comprises a plurality of elongate planar rectangular wall elements which define the depth and height of said core and extend in a core plane in a wall element direction, and wherein, in the expanded state of the cellular core, arrays of closed cells are formed between two adjacent wall elements, and wherein a respective cell is formed by wall element sections and bonded wall element sections of the two adjacent wall elements. The bonded wall elements have with this folding facility of the wall elements, the freedom to take a position of being almost or exact rectangular to the skin line which means that with this core we have on almost all positions the best skin support as it is the closest to rectangular support. An advantage is that the core can be formed with a double curvature.
Cellular core (1) comprising a plurality of elongate planar rectangular wall elements (3) which define the depth (d) and height (h) of said core and extend in a core plane in a wall element direction (x), said wall elements (3) each having alternating bonded wall element sections (7) and free wall element sections (6), in such a way that the wall elements (3), in a state expanded transversely with respect to the wall element direction (x), define arrays of closed cells (4) between two adjacent wall elements (3), wherein each cell (5) is formed by free wall element sections (6) and bonded wall element sections (7) of adjacent wall elements (3), and the longitudinal edges of said expanded wall elements (3) define opposite bonding surface areas (2) suitable for sandwich type construction, wherein the free wall element sections (6) are pliable for enabling bonded wall element sections of the expanded core to change their mutual position upon bending of the expanded cellular core.
Dependencies are inferred from the claim text.