Foreign object damage resistant composite blade and manufacture

Details Foreign object damage resistant composite blade and manufacture Foreign object damage resistant composite blade and manufacture

1993-10-04

1994-12-27

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Laminated, embedded member or encased material

416224, 416241A, 416229A, F01D 514

Patent

active

053759788

ABSTRACT:
The present invention provides a composite airfoil particularly useful as a fan blade, having a high degree of twist, in a large high bypass ratio turbofan engine. The composite airfoil of the present invention has a progression of filament reinforced airfoil laminations of varying span, arranged in order by span, and interrupted by at least one filament reinforced airfoil lamination having a span out of height order to form what is called a confused or broken shear plane where radially outer tips of the laminations end.

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"Wide Chord Fan Club"--Flight International, May 23-29, 1990 pp. 36-38.

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