Radial turbine rotor with improved saddle life

Details Radial turbine rotor with improved saddle life Radial turbine rotor with improved saddle life

1989-12-11

1991-10-29

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

416188, 416229A, 416241R, 29889, F01D 514

Patent

active

050611542

ABSTRACT:
A radial inflow rotor for a gas turbine engine has a dual structure for improving the low cycle fatigue life of the saddle region. The interior core or hub of the rotor is a high strength polycrystalline alloy while a series of outer blade segments is individually cast as single crystals and bonded so that their low modulus (100) crystallographic axis is aligned substantially tangential to the rotor's circumference at the saddle.

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