METHOD FOR FABRICATING A COMPOSITE TRUSS STRUCTURE

A method for fabricating a composite truss structure (10) having a core (16) with a plurality of truss elements (18), comprising: preparing a dry fabric mold (36) by a method comprising: placing a first dry fabric layer (38) on a tool (40) having a non-corrugated surface, and placing a first layer o...

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Bibliographische Detailangaben
Hauptverfasser:	LOCKETT, Peter J, GLYNN, Andrew K, POOK, David A, SCARFE, Manning J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AEROPLANES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AIRCRAFT AVIATION COSMONAUTICS HELICOPTERS PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for fabricating a composite truss structure (10) having a core (16) with a plurality of truss elements (18), comprising: preparing a dry fabric mold (36) by a method comprising: placing a first dry fabric layer (38) on a tool (40) having a non-corrugated surface, and placing a first layer of fabric-loaded mandrels (28) on the first dry fabric layer to create a corrugated surface (44), each of the fabric-loaded mandrels including a dry fabric tube (26) wrapped around a mandrel (24); infusing the dry fabric mold (36) with a resin; and curing (56) the resin to provide the composite truss structure; wherein preparing the dry fabric mold (36) further comprises placing a second layer of fabric-loaded mandrels (28) on the first layer of fabric-loaded mandrels (28) by positioning each of the fabric-loaded mandrels (28) of the second layer in a respective one of grooves (46) formed on the corrugated surface (44); and the method further comprises: preparing each of the fabric-loaded mandrels (28) by pulling the dry fabric tube (26) over the mandrel (24) or by braiding the dry fabric tube over the mandrel; and removing the mandrels (24) from the composite truss structure (10) after curing the resin to provide the composite truss structure.