Increased impact resistance in hollow airfoils

Details Increased impact resistance in hollow airfoils Increased impact resistance in hollow airfoils

1995-04-28

1996-12-17

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Hollow

416DIG2, 2988972, F01D 518

Patent

active

055846602

ABSTRACT:
A hollow airfoil (10) for a gas turbine engine having a leading edge (12), a trailing edge (14), a pressure side (20), and a suction side (22) includes a plurality of internal spanwise stiffening ribs (31-35) that are arranged in a logarithmic pattern. The particular arrangement of internal fibs (31-35) optimizes stiffness of the airfoil (10) without significantly increasing the weight thereof.

REFERENCES:
patent: 4815939 (1989-03-01), Doble
patent: 5253824 (1993-10-01), Halila et al.
patent: 5269058 (1993-12-01), Wiggs et al.
patent: 5419040 (1995-05-01), Weisse et al.
patent: 5439354 (1995-08-01), Hansen et al.

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