Metal working – Method of mechanical manufacture – Impeller making
Patent
1991-10-18
1993-06-29
Cuda, Irene
Metal working
Method of mechanical manufacture
Impeller making
298897, 416224, B21K 304
Patent
active
052222977
ABSTRACT:
A method of manufacturing a lightweight composite propulsor blade of spar and shell construction comprises forming a composite spar (30) having an elongated foam body (20) bonded to a short metal retention tulip (10) and overlayed with a dry braided wrap of angular structural fibers and substantially unidirectional spanwisely aligned structural fiber plies disposed between the braided layers; adding a leading edge foam body (42) and a trailing edge foam body (44) to the spar assembly to form a blade subassembly (50); providing a dry braided fabric wrap over the blade assembly; disposing the fabric covered blade subassembly into a shell molding die and simultaneously impregnating the dry spar fabric wrap and the dry shell fabric wrap with a curable resin material; and curing the impregnated blade subassembly.
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Graff John M.
Violette John A.
Cuda Irene
Habelt Willaim W.
United Technologies Corporation
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