Forming a flow directing element for a turbine

Details Forming a flow directing element for a turbine Forming a flow directing element for a turbine

1992-10-08

1994-05-24

Cuda, Irene

Metal working

Method of mechanical manufacture

Impeller making

416235, 416241R, B23D 1500

Patent

active

053137000

ABSTRACT:
A flow directing element for the turbine section of a rotary machine includes various construction details which are developed which increase the aerodynamic efficiency of the flow directing element. In one embodiment, the flow directing element is a rotor blade having a roughened surface which approximates the critical roughness characteristic of the airfoil. In one particular embodiment, the roughness average of the surface lies between 120 to 200 AA microinches.

REFERENCES:
patent: 1903823 (1933-04-01), Longhead
patent: 4428213 (1984-01-01), Neal et al.
patent: 4846629 (1989-07-01), Takiyama
patent: 4859150 (1989-08-01), Takigawa
patent: 4900230 (1990-02-01), Patel

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