TURBINE-ENGINE IMPELLER
The invention relates to a turbine-engine impeller, including a disk, the outer periphery of which is formed with at least one recess for mounting the blade roots, and a shim (7) mounted between each blade root and the bottom of the recess. The shim (7) comprises at least one bistable member (17), w...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | The invention relates to a turbine-engine impeller, including a disk, the outer periphery of which is formed with at least one recess for mounting the blade roots, and a shim (7) mounted between each blade root and the bottom of the recess. The shim (7) comprises at least one bistable member (17), which can assume a first stable mounting or removal position, in which said member does not exert any force on the blade root, and a second stable position, in which said bistable member exerts a radial force on the blade root. The shim (7) also comprises at least one resilient damping member (12) mounted between the bottom of the recess and the blade root.
Roue à aubes de turbomachine, comprenant un disque dont la péri- phérie externe est formée avec au moins un alvéole de montage des pieds des aubes, et une cale (7) montée entre chaque pied d'aube et le fond de l'alvéole. La cale (7) comporte au moins un organe (17) du type bistable en position et qui peut occuper une première po- sition stable de montage ou de démontage dans laquelle ledit or- gane n'exerce pas d'effort sur le pied d'aube et une seconde position stable dans laquelle ledit organe bistable exerce un effort radial sur le pied d'aube. La cale (7) comporte en outre au moins un organe élas- tique d'amortissement (12) monté entre le fond de l'alvéole et le pied d'aube. |
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