Hollow airfoil impact resistance improvement

Details Hollow airfoil impact resistance improvement Hollow airfoil impact resistance improvement

1993-06-15

1995-08-08

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Hollow

416 96A, F01D 518

Patent

active

054393540

ABSTRACT:
Hollow airfoils, such as fan blades, nozzles and struts used in axial flow gas turbine engines, that have improved resistance to impact from foreign objects are disclosed. Relocation of airfoil material is used to preferentially strengthen the airfoil to respond to the stress from the impact of a foreign object. Internal spacers are redistributed toward the leading edge and the material from the skin of the concave side and the convex side is shifted from one side to the other and toward the leading edge of the airfoil where impact stress is greatest.

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