Fan blade axial retention device

Details Fan blade axial retention device Fan blade axial retention device

1990-09-11

1992-05-12

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

F01D 532

Patent

active

051121930

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).

REFERENCES:
patent: 3043562 (1962-07-01), Van Nest et al.
patent: 3644058 (1972-02-01), Barnabei et al.
patent: 3744930 (1973-07-01), Carroll
patent: 3853425 (1974-12-01), Scalzo et al.
patent: 4470756 (1984-09-01), Rigo et al.

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