Truss core panels

Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source

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Details

52642, 52648, 52690, 428174, 428167, 428188, 428260, 428273, 428290, 428593, 428408, 428902, 428114, 428105, B32B 108, E04C 316, B32B 312, B32B 320

Patent

active

042230535

ABSTRACT:
Truss core panels comprising face sheets and a core, formed of adjoining tubes having an equilateral triangular cross-sectional shape, are disclosed. The face sheets are formed of either a homogeneous material (e.g., a metal, such as aluminum or titanium); or, a composite material, such as a laminate formed of bonded plies. The plies are woven from suitably strong fibers (e.g., glass or graphite), bonded together by a suitable resin. The tubes are also formed of either a homogeneous material or laminated from suitably strong fibers bonded together by a resin. Depending upon the material used, the tubes can be either formed by pultrusion or by machine winding on mandrels and cured. The tubes may be formed of the same material as the face sheets or different materials. Stiffening ribs and the like are formed by including additional layers of tubes. Further, the tubes may be filled continuously or intermittently, as desired, to accommodate fasteners. Since the tubes are equilateral triangles in cross-sectional shape, assembly of the tubes in one or more layers is fast and, therefore, inexpensive.

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