Annular gasket disposed at one axial extremity of a rotor and covering blade feet
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorsDaniel Agram, Jean-Louis Charbonnel, Philippe G. E. Joly, Gerard G. Miraucourt, Jacky S. Naudet, Jean-Claude Prato
Life of this patent
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Abstract
An annular gasket includes, at least partially conically shaped portion and is supported on a rotor via three bearing surfaces. The conical shape makes it possible to reject the center of gravity of the sections of the rotor which provokes substantial rotational movement when centrifugal forces exist and allows for an improved imperviousness via the internal and external bearings. This invention is applicable for the rotors of aircraft engines provided with axial broachings in which blade feet are able to slide.
Claims5
An annular gasket disposed at one axial extremity of a rotor and covering broachings for receiving blade feet situated on the rotor and comprising:
- three concentric bearing surfaces for bearing on associated surfaces on the rotor, which gasket bearing surfaces includes a radially internal sealing bearing surface orientated facing away from the broachings, a radially external bearing surface with an axial orientation orientated towards the broachings, and a radially median bearing surface radially orientated outwardly, the gasket having, at least over a radially internal portion, the shape of a cone opening axially towards the broachings, the blades having grooves formed therein and the gasket having, radially outwardly of the radially external bearing surface, a substantially circular collar which engages said grooves of the blades.
Dependencies are inferred from the claim text.