Turbine engine variable stator vane

Details Turbine engine variable stator vane Turbine engine variable stator vane

2007-04-10

2010-10-05

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C416S22300B

Reexamination Certificate

active

07806652

ABSTRACT:
A turbine engine variable stator vane includes a platform having a circumference adjoining opposing surfaces. A trunnion extends from one of the opposing surfaces. An airfoil is supported on the other of the opposing surfaces opposite the trunnion. The airfoil includes leading and trailing edges. An overhanging portion of the airfoil, which includes the trailing edge, extends beyond the circumference. A fillet joins the airfoil and the other opposing surface and extends along the other opposing surface in a lateral direction beyond the circumference toward the trailing edge. In one example, the fillet is provided about the entire perimeter of the airfoil. The airfoil includes pressure and suction sides. The circumference includes a relief cut extending from the suction side and adjoining a notch in the circumference to form an apex overlying the end surface.

REFERENCES:
patent: 4214852 (1980-07-01), Tuley et al.
patent: 5328327 (1994-07-01), Naudet
patent: 5636968 (1997-06-01), Audet et al.
patent: 6129512 (2000-10-01), Agram et al.
patent: 6283705 (2001-09-01), Rice et al.
patent: 6461105 (2002-10-01), Nicolson
patent: 7125222 (2006-10-01), Cormier et al.

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