Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Radial flow devices
Patent
1989-10-16
1991-07-30
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Radial flow devices
416189, 416DIG2, F01D 514, F01D 522
Patent
active
050355783
ABSTRACT:
A blade for a steam turbine has a concave, pressure-side surface which has a constant radius of curvature, while the convex, suction-side surface has a continuously increasing radius curvature. The constantly increasing radius of curvature allows fluid to accelerate and thus ensure a small boundary layer of thickness. The center of gravity of the blade tenon is located above the center of gravity of the airfoil which will reduce the steam bending stress applied at the base of the airfoil as well as at the root of the rotor blade.
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Larson James A.
Look Edward K.
Westinghouse Electric Corp.
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