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US 6,709,538 B2Granted
Method of making a laminated composite radius filler
AssigneeThe Boeing Company
InventorsPanagiotis E. George, Kirk B. Kajita, Barry P. Van West
Life of this patent
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Abstract
A laminated composite (multi-ply) radius filler includes a plurality of woven fabric reinforced plies cut to fill a radius gap (including, if appropriate, intentional overfill) to increase absolute strength, to increase specific strength, or to reduce cost by reducing cracking and distortion in the radius of a composite assembly. The present invention also describes the method of manufacture and method of use for such laminated composite radius filler.
Claims3
A method for making a radius filler, comprising the steps of:
- (a) optionally, making a composite tip with unidirectional fibers with unidirectional fibers in the form of a wedge;
- (b) making a laminate of debulked plies of fabric reinforced composite substantially the shape of the radius gap that the radius filler fills and having at least one ply oriented at +45° and another ply oriented at −45° relative to the longitudinal axis of the filler.
Dependencies are inferred from the claim text.