Turbo-machine compressor with variable incidence stator vanes
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorsClaude R. L. Lejars, Jacky Naudet, Jean-Max M. Silhouette, Jacques M. P. Stenneler
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Abstract
A turbo-machine compressor which includes variable incidence stator vanes the angular adjustment of which is controlled by a control ring coupled to individual vanes by individual links. Each link has at least one contact surface on each of its longitudinal edges, such surfaces being either plane or convex. In the event of failure of any link, the change in orientation is controlled within narrow limits by contact with the contact surfaces of adjacent links which have not failed.
Claims12
In a turbo-machine compressor,
- an array of variable incidence stator vanes, each vane having;
- first pivot means at a first end by which the vane is mounted for variable orientation, and
- second pivot means at a second end, and
- means for varying the incidence of the vanes including
- a plurality of links, each such link being connected at a first end portion thereof to the second pivot means of a respective vane, and
- a ring member on which a second end portion of the links are pivotally connected so that motion of the ring member about the longitudinal axis of the compressor results in simultaneous adjustment of the stator vanes,
- each longitudinal side of the link being formed with a contact surface substantially parallel to the axis of the second pivot means, and the contact surfaces of adjacent links being so disposed that in the event of failure of one said link the contact surface of that link will make contact with the contact surface of an adjacent link thereby limiting the change in incidence of the vane connected with the failed link.
Dependencies are inferred from the claim text.