Hollow fan blade for gas turbine engine

Details Hollow fan blade for gas turbine engine Hollow fan blade for gas turbine engine

2006-02-07

2006-02-07

Nguyen, Ninh H. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Hollow

C029S889720

Reexamination Certificate

active

06994525

ABSTRACT:
Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming operation. In one embodiment, contiguous cavities are formed around freestanding ends of the ribs to reduce the number of cavities required. The freestanding end of each rib is flared such that it has a larger width than the rest of the rib. The cavity extends continuously around the free, flared end of the rib.

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Joe Adams, Tomorrow's Technology Today Pratt & Whitney's Vision for the Future, Nov. 6, 2001, pp. 1-21.
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“Hollow Fan Blade For Gas Turbine Engine”, U.S. Appl. No. 10/765,593; filed Jan. 26, 2004.
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