Fan blade axial retention device

Details Fan blade axial retention device Fan blade axial retention device

1990-09-11

1991-11-26

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

F01D 532

Patent

active

050678779

ABSTRACT:
A fan blade retention device includes a retaining flange (18) located aft of the blade fixing element (7). The flange (18) abuts an outwardly facing circumferential groove (13) located between the flange (18) and the female half of the blade fixing element (10). The groove (13) is large enough to allow the blade fixing element (7) machining tool to be removed. The fan blade (28) includes an extension (21) of the blade root (11) on the aft side of the blade (28). When the blade root (11) is fully received within the female half of the blade fixing element (10), the blade extension (21) spans the width (20) of the groove and contacts the flange (18), thereby preventing the fan blade (28) from traveling aft.

REFERENCES:
patent: 3734646 (1973-05-01), Perkins
patent: 4470756 (1984-09-01), Rigo et al.

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