Design and processing method for manufacturing hollow airfoils (three-piece concept)

A method is provided for making a three-piece hollow airfoil. Three metal sheets (1,2,3) are preformed into initial shapes and sealed together to form an in-process assembly. Internal cavities (24) are formed in the assembly (29) prior to sealing. The assembly is subjected to high temperature and pr...

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Hauptverfasser: PATSFALL, RALPH EARL, WIGGS, GENE EDWARD, CHENG, JUNG-HO, LEMONDS, JEFFREY, MARTINI, GARY THOMAS
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Sprache:eng ; fre ; ger
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creator PATSFALL, RALPH EARL
WIGGS, GENE EDWARD
CHENG, JUNG-HO
LEMONDS, JEFFREY
MARTINI, GARY THOMAS
description A method is provided for making a three-piece hollow airfoil. Three metal sheets (1,2,3) are preformed into initial shapes and sealed together to form an in-process assembly. Internal cavities (24) are formed in the assembly (29) prior to sealing. The assembly is subjected to high temperature and pressure to diffusion bond the sheets together at selected points. The cavities (24) are then subjected to internal pressure at high temperature in order to inflate and superplastically deform the assembly to the desired shape. Excess material may be machined off after inflation. A method for partially defining the in-process shape is also provided.
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language eng ; fre ; ger
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subjects AEROPLANES
AIRCRAFT
AVIATION
CLADDING OR PLATING BY SOLDERING OR WELDING
COMBINED OPERATIONS
COSMONAUTICS
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
HELICOPTERS
MACHINE TOOLS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OTHER WORKING OF METAL
PERFORMING OPERATIONS
PUNCHING METAL
SOLDERING OR UNSOLDERING
TRANSPORTING
UNIVERSAL MACHINE TOOLS
WELDING
WORKING BY LASER BEAM
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
title Design and processing method for manufacturing hollow airfoils (three-piece concept)
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