Variable vane arrangement for a turbomachine

Details Variable vane arrangement for a turbomachine Variable vane arrangement for a turbomachine

2006-09-12

2006-09-12

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C415S229000

Reexamination Certificate

active

07104754

ABSTRACT:
A vane arrangement for a compressor of a gas turbine engine comprises a plurality of circumferentially arranged vanes, a plurality of levers and a control ring. Each vane comprises a fixed upstream portion secured to a casing and a movable downstream portion pivotally mounted to the casing. The movable portion of each vane is pivotally mounted at the upstream end of the movable portion adjacent the fixed portion of the respective vane. The movable portion of each vane has a spindle extending through an aperture in the casing. Each aperture in the casing has an elongate shape in cross-section and each aperture has a bush arranged within the aperture and around the spindle to fill the elongate shaped aperture. The downstream end of the fixed portion of each vane has substantially the same shape as the upstream end of the movable portion of the respective vane.

REFERENCES:
patent: 3887297 (1975-06-01), Welchek
patent: 3990810 (1976-11-01), Amos et al.
patent: 2 339 244 (2000-01-01), None

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