Turbomachine variable-pitch stator blade

Details Turbomachine variable-pitch stator blade Turbomachine variable-pitch stator blade

2011-07-19

2011-07-19

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

C415S160000

Reexamination Certificate

active

07980815

ABSTRACT:
A turbomachine variable-pitch stator blade is disclosed. The stator blade includes an aerofoil, extended on one side by a pivot by which it is mounted so as to rotate in a bore of the casing of the turbomachine, and a plate, between the aerofoil and the pivot, perpendicular to the line formed by the aerofoil and the pivot. Since the face of the plate opposite to the aerofoil includes a first zone and a second zone, the first zone being subjected to an intense friction with the wall of the casing because of the transverse forces applied to the aerofoil, the thickness of the plate on the second zone is reduced relative to the thickness of the plate of the first zone. Therefore, it is possible to reduce the weight of the blade without loss of performance.

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