Feathering device for the fan blades of a turboprop engine

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United States of America Patent

PATENT NO 8696303
SERIAL NO

13073139

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Abstract

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A feathering device for the fan blades of a turboprop engine that includes at least one set of fan blades with adjustable orientation is provided. The assembly is attached in rotation to a rotating cowling connected to a turbine rotor. Each blade is coupled, for the adjustment of its orientation, to a control ring that is movable between two extreme positions, one of which corresponds to feathering of the blades. Mechanical parts are able to extend elastically as a result of a rise in their temperature, these mechanical parts being positioned facing the control ring so as to be able to exert a thrust force on the ring in order to put it in a position to feather the blades when they expand. A device to cause a rise in the temperature of the mechanical parts so as to expand them is also provided.

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Patent Owner(s)

  • SNECMA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gallet, Francois Paris, FR 43 405

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