Impact resistant hollow airfoils

Details Impact resistant hollow airfoils Impact resistant hollow airfoils

1997-09-10

2000-04-11

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Hollow

416224, 416232, 416223A, 416229A, 416229R, 416230A, 416230R, 416241R, F04D 2938, F01D 518

Patent

active

060481749

ABSTRACT:
A hollow airfoil (34) for a gas turbine engine having a leading edge (50), a trailing edge (52), a pressure side (54), and a suction side (56) includes a solid region of enhanced chordal thickness (78), and buttresses (82, 84, 86, 88). The present invention airfoil is preferentially strengthened so as to reduce the risk of airfoil fracture due to impact of airfoil with successive airfoils during an airfoil loss condition.

REFERENCES:
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patent: 5297937 (1994-03-01), Umetani et al.
patent: 5343619 (1994-09-01), Lardellier
patent: 5419040 (1995-05-01), Weisse et al.
patent: 5429877 (1995-07-01), Eylon
patent: 5439354 (1995-08-01), Hansen et al.
patent: 5584660 (1996-12-01), Carter et al.
patent: 5785498 (1998-07-01), Quinn et al.

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