Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Having wear liner – sheathing or insert
Patent
1986-01-22
1988-03-01
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Having wear liner, sheathing or insert
416241R, F01D 514
Patent
active
047282622
ABSTRACT:
An improved propeller blade for use in an environment subjecting the blade to particulate impacts tending to erode the dynamic profile of the blade, and which is carried by a rotatable hub and extends radially therefrom, whereby the blade bends in cantilever fashion and twists axially of its length during operation. The blade may be either of the aluminum alloy type or of a resinous molded matrix type with reinforcing inclusions, and is cut away along its leading edge to accommodate therein a plurality of serially aligned but separate erosion resistant implants. The implants are formed of a silicon based ceramic material and are externally shaped to complement in profile continuity the prescribed efficient dynamic profile of the blade, and there is employed a novel system for restraining the implants against dislodgements during operation of the propeller.
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Garrett Robert E.
Kwon John T.
Textron Inc.
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