Fan blade anti-fretting insert
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United States of America Patent
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Oct 29, 2013
Issued Date -
N/A
app pub date -
Feb 18, 2009
filing date -
Feb 18, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A fan blade anti-fretting insert is described whereby to reduce wear between the root portion of a fan blade and the root slot of the rotor fan hub of a turbo fan engine to which the fan blade are secured. The anti-fretting insert can be formed of a composite spring material having a memory and is dimensioned and shaped to be fitted between the fan blade platform and the outer surface portion of the rotor fan hub between adjacent fan blades, whereby to apply a pushing force against the platform and consequently to the fan blades secure thereto thereby applying a resulting pulling force on the root portion of the fan blades to prevent rocking of the root portion in their root slots formed in the rotor fan hub.
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