Article with material absorption cavities to reduce buckling dur

Details Article with material absorption cavities to reduce buckling dur Article with material absorption cavities to reduce buckling dur

1994-04-29

1996-05-14

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Workpiece with longitudinal passageway or stopweld material

428593, 428600, 2988972, 29463, 228171, 228193, F01D 518, B23P 1504

Patent

active

055165931

ABSTRACT:
An airfoil and its sub components for a gas turbine engine have a convex wall and a concave wall that are connected at leading and trailing edges. Internal supports extending from the convex and concave walls define a series of airfoil supports that have at least one primary cavity between them. Internal supports in the proximity of the edges define material absorption cavities that have a smaller cross-section than the cross section of the primary cavities. Pressure applied to the walls during the diffusion bonding process forces material inside the airfoil, and most particularly the airfoil edges, to yield towards the center of the airfoil. The material absorption cavities absorb material that yields during the diffusion bonding process and prevent buckling of the walls.

REFERENCES:
patent: 2782862 (1957-02-01), Wright
patent: 3383093 (1968-05-01), Howald
patent: 4507051 (1985-03-01), Lesgourgues et al.
patent: 4606778 (1986-08-01), Jahnke
patent: 4894898 (1990-01-01), Walker
patent: 5269058 (1993-12-01), Wiggs et al.

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