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US 2002/0000494 A1Published application
Aircraft door and mold for casting the door
AssigneeEurocopter Deutschland GmbH
InventorsJens Bold, Alexander Engleder, Lothar Pollithy
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AssigneeEurocopter Deutschland GmbH
InventorsJens Bold, Alexander Engleder, Lothar Pollithy
Estimating the term…
An aircraft door has an inner framework integrally connected to an outer skin by simultaneously casting the framework and the skin in a mold that holds a single core for each frame element in the form of a rib in a freight door or a beam in a passenger door. The ribs extend circumferentially relative to a longitudinal central axis of the aircraft. The beams extend in parallel to the central aircraft axis. The single core is selected from at least one core type and four core types at the most. The frame elements in the form of ribs or beams have open arches for a considerable weight reduction.
A cast aircraft door comprising an inner framework and an outer skin integrally connected to said inner framework by a casting operation, said inner framework comprising frame elements, each frame element having at least one arched frame section, wherein each frame section comprises a plurality of arches and a bridge portion bridging said plurality of arches, said frame element further comprising a cavity in said at least one arched frame section.
A combination of a mold and core assembly for casting an aircraft door having an inner framework covered by an outer skin integrally secured to said inner framework by simultaneously casting in said mold, said inner framework and said outer skin, said inner framework comprising a plurality of frame elements arranged in parallel to each other, said mold comprising a first mold part and a second mold part and said core assembly consisting of a single core for each frame element.
Dependencies are inferred from the claim text.