Unshrouded blading for high bypass turbofan engines

Details Unshrouded blading for high bypass turbofan engines Unshrouded blading for high bypass turbofan engines

1994-05-23

1996-02-13

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Blade cuff or shank construction

416241R, 416241B, F01D 516

Patent

active

054907640

ABSTRACT:
Metal alloy fan blades reinforced with a metal matrix composite for enhancing stiffness of the fan blades without a significant weight penalty, and which are suitable for use in high bypass turbofan engines. The metal matrix composite is bonded to each fan blade near its root so as to increase stiffness and thereby provide frequency and stability control to the fan blades. As a result, a lower engine weight can be realized by using more fan blades without the need for a part span shroud.

REFERENCES:
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patent: 3303889 (1967-02-01), Bates
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patent: 3368795 (1968-02-01), Bolin et al.
patent: 3758233 (1973-09-01), Cross et al.
patent: 3942231 (1976-03-01), Whitaker
patent: 4178667 (1979-12-01), Stevens et al.
patent: 4784575 (1988-11-01), Nelson et al.
patent: 4921405 (1990-05-01), Wilson

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