Fan blade axial retention device
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United States of America Patent
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-
May 12, 1992
Grant Date -
N/A
app pub date -
Sep 11, 1990
filing date -
Sep 11, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fan blade retention device includes a collar (13) inserted into a circumferential groove (14) cut into the hub (6) of a turbofan engine. The outward facing groove (14) is positioned aft of the fan blade fixing channel (15). When the fan blade root (11) is completely received within the blade fixing channel (15), the blade root (11) contacts the collar (13) and is prevented from traveling further aft. If the collar 13 is segmented, an annular rear cover plate (19) holds the segmented collar (13) radially within the groove (14).
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