Tailored turbulation for turbine blades

Details Tailored turbulation for turbine blades Tailored turbulation for turbine blades

2006-10-03

2006-10-03

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

C416S095000, C416S09600A

Reexamination Certificate

active

07114916

ABSTRACT:
A turbine blade having improved cooling characteristics is provided. The turbine blade has an airfoil portion having a span, and at least one cooling passageway in the airfoil portion extending from a root portion of the airfoil portion to a tip portion of the airfoil portion. A plurality of turbulation promotion devices are placed in the at least one cooling passageway. The turbulation promotion devices have a P/e ratio which varies along the span of the airfoil portion, where P is the pitch between adjacent turbulation promotion devices and e is the height of the turbulation promotion devices.

REFERENCES:
patent: 5232343 (1993-08-01), Butts
patent: 5413463 (1995-05-01), Chiu et al.
patent: 5924843 (1999-07-01), Staub et al.
patent: 6416283 (2002-07-01), Johnson et al.
patent: 6672836 (2004-01-01), Merry

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