Flexible mandrel for highly contoured composite stringer

Details Flexible mandrel for highly contoured composite stringer Flexible mandrel for highly contoured composite stringer

2008-04-15

2008-04-15

Crispino, Richard (Department: 1791)

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Chamber enclosing work during bonding and/or assembly

C156S500000, C156S581000, C156S583300, C425S403000, C264S313000

Reexamination Certificate

active

10904717

ABSTRACT:
An aircraft stringer lay-up assembly is provided comprising a contoured curing block and a first mandrel element positioned thereon. The first mandrel assembly includes a first bar assembly having a plurality of rigidity reducing first slots formed along a first mandrel length. The plurality of rigidity reducing first slots protruding partially through a first mandrel depth of the first mandrel element to allow the first bar assembly to conform to the contoured curing block. A composite ply assembly is laid up onto the first mandrel element and cured while conformed to said contoured curing block such that a contoured composite stringer element is generated.

REFERENCES:
patent: 2739350 (1956-03-01), Lampman
patent: 4338381 (1982-07-01), Rogers
patent: 4576849 (1986-03-01), Gardiner
patent: 4786456 (1988-11-01), Witte
patent: 842815 (1960-07-01), None
patent: 58076217 (1983-05-01), None
patent: WO9606726 (1996-03-01), None

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