Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Patent
1998-09-28
2000-03-07
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
416215, 416216, 416218, 416219R, 416220R, 416248, F01D 530
Patent
active
060331852
ABSTRACT:
A rotor blade includes an airfoil, an integral platform, and a dovetail integrally joined to the platform. The dovetail includes a neck extending between a pair of dovetail lobes configured to engage a complementary slot in a rotor disk. The dovetail includes an undercut extending between an outer face of the dovetail lobes and the neck for introducing a stress concentration thereat. The stress concentration relieves stress at the outer face at the expense of the neck for increasing the high cycle fatigue life of the blade.
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Dingwell William T.
Hungler Anthony E.
Lammas Andrew J.
General Electric Company
Herkamp Nathan D.
Hess Andrew C.
Look Edward K.
Shanley Matthew T.
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