Hollow aerofoil blade

Details Hollow aerofoil blade Hollow aerofoil blade

1985-10-22

1987-08-11

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Laminated, embedded member or encased material

416230, 416233, 416241A, F01D 512

Patent

active

046858644

ABSTRACT:
A hollow aerofoil cross-section aircraft propeller blade is provided with a tow of KEVLAR fibres internally thereof. The fibres which are anchored to the blade root and tip portions are arranged to be passive under all normal operating conditions of the blade. However in the event of a structural failure of the blade between its root and tip portions the fibres serve to contain the blade tip together with any portion of the blade attached thereto. The invention is additionally applicable to prop-fan and fan blades for gas turbine engines.

REFERENCES:
patent: 2714245 (1955-08-01), Goetzel
patent: 3105557 (1963-10-01), Wigal
patent: 3664764 (1972-05-01), Davies
patent: 4051289 (1977-09-01), Adamson
patent: 4111606 (1978-09-01), Prewo

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