Internal core profile for a turbine nozzle airfoil

Details Internal core profile for a turbine nozzle airfoil Internal core profile for a turbine nozzle airfoil

2006-02-07

2006-02-07

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

C415S208200, C415S210100, C415S115000

Reexamination Certificate

active

06994520

ABSTRACT:
First stage nozzle airfoils have internal core profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I wherein X, Y and Z values are in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define internal core profile sections at each radial distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete internal core profile. The X, Y and Z distances may be scalable as a function of the same constant or number to provide a scaled-up or scaled-down internal core profile. The nominal internal core profile given by the X, Y and Z distances lies within an envelope of ±0.030 inches in directions normal to any internal core surface location.

REFERENCES:
patent: 5980209 (1999-11-01), Barry et al.
patent: 6722851 (2004-04-01), Brittingham et al.
patent: 6761535 (2004-07-01), McGrath et al.
patent: 6893210 (2005-05-01), Zhang et al.

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