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US 6,745,662 B2Granted
Cross cell sandwich core
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorDonald B. Ford
Life of this patent
Estimating the term…
Abstract
A sandwich core comprises two faceplates separated by a plurality of cells. The cells are comprised of walls positioned at oblique angles relative to a perpendicular axis extending through the faceplates. The walls preferably form open cells and are constructed from rows of ribbons. The walls may be obliquely angled relative to more than one plane extending through the perpendicular axis.
Claims7
A cross cell sandwich core structure comprising:
- a first and second faceplate spaced apart from one another and substantially parallel to one another;
- a plurality of spaced apart and separated ribbons located between the first and second faceplates, the ribbons extending in width from a top surface of the first faceplate to a bottom surface of the second faceplate and extending in length substantially parallel to one another along a length of the first and second faceplates, said ribbons extending continuously from the top surface of the first faceplate to the bottom surface of the second faceplate across the width of the ribbons, and the length of the ribbons being substantially longer than the width of the ribbons;
- wherein each of the plurality of ribbons has at least one firs wall portion along the width of the respective ribbon, and said at least one first wall portion is obliquely angled relative to a first axis extending through said rust and second faceplates and the at least one first wall portion, said first axis perpendicular to the first and the second faceplates where it crosses through the first and second faceplates, respectively.
Dependencies are inferred from the claim text.