Co-cured composite structures and method of making them
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United States of America Patent
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-
Jun 1, 2004
Grant Date -
N/A
app pub date -
Mar 1, 2001
filing date -
Mar 1, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A composite structure has composite skin layers and at least two elongated stiffener/spacer composite members interposed between the skin layers. The stiffener/spacer composite members are arranged generally longitudinally of the skin layers in spaced-apart relation laterally. Each of the skin layers is formed by assembling a layer of an uncured resin-impregnated fiber material on a forming surface of a jig. Each stiffener/spacer composite member is formed of an uncured resin-impregnated fiber material that is laid up over an elongated hollow mandrel of a stiffened fabric and is assembled to one of the uncured skin layers. The jigs are juxtaposed to form a sandwich with the assembled uncured composite layers, which are then vacuum-bagged and co-cured under a predetermined pressure and a predetermined temperature to render the structure unitary.
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