Blade with redundant anchoring in a hub, propeller, turboprop engine and aircraft
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United States of America Patent
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Jun 14, 2016
Grant Date -
Jun 25, 2015
app pub date -
Dec 20, 2012
filing date -
Dec 23, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A propeller blade includes an aerodynamic portion and a blade shank, a hub assembly (28, 32) which provides anchoring in a hub, a blade shank assembly of the aerodynamic portion, a safety device including a safety element (24) which extends from a distal assembly in the aerodynamic portion to a proximal assembly (26, 27) in the blade shank and which is adapted to be able to anchor the aerodynamic portion in the blade shank, wherein the blade shank assembly is anchored radially outside the hub assembly, the proximal assembly is anchored to the blade shank radially inside the hub assembly, and the distal assembly and/or the proximal assembly has a strictly positive radial clearance (30).
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