BLADE COMPRISING A METAL BODY AND A NON-METALLIC CORE AND METHOD FOR MANUFACTURING SUCH A BLADE

Abstract

The invention relates to a blade (7) for a turbomachine, in particular for an aircraft, said blade comprising a blade connected to a root (76), said blade comprising a leading edge (73), a trailing edge (74), a lower surface (71) and an upper surface (72) connected to the lower surface by the leading edge and the trailing edge, in which the blade comprises a metal body (8) and at least one non-metallic core (9), the metal body defining the root of the blade, as well as the leading and trailing edges of the blade, the metal body further defining a portion of the lower surface and the upper surface of the blade and comprising at least one aperture (80) which opens onto the lower surface or the upper surface of the blade, and said at least one non-metallic core completely filling said at least one aperture and defining the remainder of the lower surface or the upper surface of the blade. Figure for abstract: Figure 3b

Claims

7. Dawn according to the preceding claim, characterized in that the lights (80) have different shapes and / or dimensions.

8. Blade according to any one of the preceding claims, characterized in that the metal body (8) further comprises at least one serration element (84) on the leading edge (73) and / or the trailing edge (74).

9. Turbomachine (10), in particular for an aircraft, comprising at least one blade (7) according to any one of the preceding claims.

10. Method for manufacturing a blade (7) according to any one of claims 1 to 8, for a turbomachine (10), in particular for an aircraft, the method comprising the following steps: (a) producing the metallic body (8) of the blade from a metallic material, and (c) completely filling said at least one light (80) with said at least one non-metallic core (9).

11. Manufacturing method according to claim 10, characterized in that step (c) is carried out by mounting said at least one non-metallic core (9) in said at least one lumen (80).

12. Manufacturing method according to claim 10, characterized in that step (c) is carried out by injection-molding a non-metallic material into said at least one lumen (80) to form said at least one non-metallic core (9).

13. Manufacturing method according to one of claims 10 to 12, characterized in that said at least one light (80) is produced during step (a) when producing the metal body (8), or between steps (a) and (c), during a step (b) of machining the metal body (8). [Fig. 3b] [Fig. 10b] [Fig. 12]

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